Montserrat Zone V: Very Low Hazard, Kept Anyway

The Scientific Advisory Committee that assesses Montserrat's volcano writes that some areas inside the restricted zone are exposed to very low levels of hazard, and puts the chance of an eruption reaching Zone V without twenty-four hours of warning at about one in twenty-five thousand a year. In its twenty-eighth report it also records that the Government of Montserrat did not wish to move the boundary or subdivide it. The line and the danger are no longer the same shape, and everyone involved knows it.

Silence Index — D-202

Quiet, but findable

Ranks 72 of 99 scored dossiers — quieter than 28% of the others we have scored. A low score is not a warning; it describes who else will be standing next to you.

How the total is weighted. These are the fixed weights of the four inputs, the same on every dossier — not this place’s scores. We do not publish per-input bars, because the per-input values were never recorded article by article and inventing four plausible numbers that sum to the total would be a fabrication dressed as a chart.

Footfall pressure — visitors measured against the ground that absorbs them30%

Access friction — permits, caps, seasons, boats, weather windows30%

Acoustic floor — how close the nearest engine is20%

Unresolved questions — what the record still cannot settle20%

This dossier was scored before 2 September 2026, when the fourth input became night darkness. It keeps the input it was reasoned with until it is re-scored at its next source re-check; the methodology page records the change.

The index is a desk instrument scored by this publication, not a field measurement. How it is calculated, and where it fails.

The part that was news

Soufrière Hills began erupting on 18 July 1995 with phreatic activity, and grew a lava dome through the following years. On 25 June 1997 a collapse released 6.4 million cubic metres of material in three pulses; the resulting pyroclastic density currents moved at roughly 40 to 60 metres per second near the dome. Nineteen people died. Over the months that followed the eruption destroyed the capital town of Plymouth along with its schools, government buildings, the main hospital, air access, energy generation and the port, and the southern two-thirds of the island were emptied of permanent residents. That is the paragraph everybody already has. It is accurate. It is also twenty-nine years old, and it is not what this dossier is about.

What this dossier is built from

Nobody from this publication has been to Montserrat. What follows is assembled almost entirely from the dullest material the island produces: the Scientific Advisory Committee's periodic hazard assessment, with its elicited probability tables; the Statistics Department's census outputs and mid-year estimates; the Environmental Compendium's export tonnages; the Foreign, Commonwealth and Development Office's partnership summary and its development tracker; the Independent Commission for Aid Impact's review of British capital spending; the Caribbean Development Bank's member profile; the Smithsonian's Global Volcanism Program; and the GeoNames gazetteer for every coordinate.

We should say at the outset what we could not open. The Montserrat Volcano Observatory's own reports index would not load for us — the site's certificate chain fails verification, and every attempt returned a robots error — which means the twenty-ninth and thirtieth Scientific Advisory Committee reports are cited nowhere in this piece. We reached the observatory's front page, which carries the preliminary statements from both, and we reached the twenty-eighth report in full. Every probability in this dossier is therefore SAC 28's, dated 30 January 2024, and is labelled as such wherever it appears. If the numbers have moved since, we do not know it.

Pause Five

Lava stopped coming out of Soufrière Hills in February 2010. The Scientific Advisory Committee dates the start of the pause to 11 February; the Smithsonian's Global Volcanism Program dates it to 12 February. We print both because both are published by institutions that ought to know, and a day is not worth reconciling by guesswork.

What has happened since is a long administrative routine. The Committee meets, reviews the monitoring record, and produces a formal elicitation — a structured procedure in which each scientist commits to numbers and the numbers are pooled. SAC 28 met from 27 to 30 November 2023 and reported on 30 January 2024. Its central estimates for the following twelve months were: nothing significant happens, 87 per cent; resumption of lava extrusion, 7 per cent; collapse of the lava dome, 3 per cent; vertical explosion, 4 per cent. The figures in the previous round were 85, 8, 3.5 and 2.8. That is the shape of the record — a percentage point of drift in either direction, year after year.

The instruments underneath those numbers are not asleep. Sulphur dioxide flux over the reporting period, measured mostly by helicopter traverses under the plume, ran between 111 tonnes a day on 13 April 2023 and 648 tonnes a day on 26 April, averaging 303. Volcano-tectonic earthquakes ran at a mean of 1.72 a day over six months against 0.79 across the whole pause. The island is inflating, and the Committee's plainest reading of that is a continuing magma influx of roughly 0.10 to 0.57 cubic metres a second into a reservoir about six kilometres down, or an equivalent pressurisation of some ten megapascals a year. Two new broadband seismic stations went in during the period. The gas scanner network was still being completed.

None of this is news, and the bulletins reflect that. The Smithsonian's weekly report series, which carries whatever the observatory sends, has published nothing on Soufrière Hills since the week of 6 to 12 September 2023, and before that nothing since early February 2022. A volcano can be closely watched and still have nothing to say.

What popular coverage gets wrong

The version that circulates — in ruin-tourism video, in Caribbean travel features, in the "abandoned places" genre that has settled permanently on YouTube and its imitators — is that Montserrat is a live disaster site. Plymouth is "the modern Pompeii". The island is "the abandoned Caribbean island". The volcano is still erupting, just behind a fence, and Zone V is the fence: a scientific verdict on where it is safe to stand.

Zone V is not a scientific verdict. It is an administrative boundary that the science has outgrown, and the hazard assessment says so in terms. SAC 28 records that there is recognition that some areas within Zone V are exposed to very low levels of hazard, and that there is the possibility of considering use of, and access to, some areas where the hazard level is considered low. On the Committee's own mapping, the areas that correspond to activities in Plymouth and the Belham valley sit in the band between one in a thousand and one in ten thousand per year for inundation by a pyroclastic density current. And the Committee put a separate number on the scenario that actually justifies a hard line — a dangerous event arriving with no warning: the probability that an eruption threatening people's safety in Zone V would occur without producing recognised precursors at least twenty-four hours beforehand was assessed at 0.004 per cent, a one-in-twenty-five-thousand chance.

Set that against the second half of the popular claim — that nobody may go in. The Foreign, Commonwealth and Development Office's own travel advice, current in July 2026, describes five land zones, A, B, C, F and V, of which only V is enforced; at Hazard Level 1, which is where the island has sat, A, B, C and F carry unlimited access and Zone V is authorised access only. Two maritime zones, E and W, work the same way. Sirens are tested daily at midday. The observatory's front page in August 2026 gives the hazard level as 1 on a scale running from 0 to 5.

The line the Government chose to keep

Here is the finding that the ruin-tourism register cannot accommodate, because it is a decision rather than an event. SAC 28 records, flatly, that the Government of Montserrat does not at this stage wish to make any changes to Zone V, either to change its boundaries, or to microzone (subdivide) it. The stated basis is that there is a need to maintain a clear delineation of zones of unrestricted and restricted access on the basis of potential impact by volcanic hazards.

That is a defensible position and it is worth stating without sneering. A boundary that follows the contours of a probability surface is harder to explain, harder to police, and harder to defend in the week after something goes wrong. A single line on a map can be taught to schoolchildren and read from a police vehicle. The Government preferred a clear line to a truthful one, and said why.

What it also did was accept that the line would have to be permeable in practice. The same report notes a recognised need to develop a structured, yet flexible, system to allow exceptions for certain activities with a controlled degree of access to Zone V. The exceptions are not hypothetical. They are the island's working day.

Who actually goes into Zone V

The Committee is precise about this, and the sentence deserves to be better known than it is. The vast majority of Zone V visits are for sand mining operations in the Upper Belham, as well as facilitating export of these volcanic materials via the jetty in Plymouth, and guided tours of Plymouth with tourists. Sand mining runs during normal observatory working hours on weekdays, on most Saturdays, and on occasional Sundays.

So the buried capital has a working jetty in it. The exclusion zone has a shift pattern. And the hazard committee's practical concern about the people inside it is not lava but dust and gas: it discusses occupational safety and health risk assessments for workers in dust- or sulphur-dioxide-prone areas — taxi drivers, sand miners, observatory staff — and the use of personal exposure sensors. At the Plymouth site the World Health Organization's twenty-four-hour limit was exceeded on 17 and 18 May 2023, at 16.5 and 15.4 micrograms per cubic metre.

The tourism side is smaller and formalised. Montserrat's tourism authority lists a guided Plymouth visit and a boat tour running west from Little Bay past the buried town, and it lists St George's Hill, reopened after more than thirty years, as requiring an application through the Disaster Management Coordination Agency, a certified guide, and a five-US-dollar environmental levy per visitor. Escorted entry is not a loophole. It is the system working as designed.

The sand

The genuinely under-reported afterlife is an extractive industry. The material that came down the Belham valley and buried the south is a graded volcanic aggregate lying in enormous quantity at sea level next to a deep-water coast, and Montserrat sells it.

The Statistics Department's own description of the sector is a single unglamorous sentence: Montserrat has a mining industry, which exports sand and aggregate. The 2020 Environmental Compendium places the quarrying in the exclusion zone and behind the Port Authority at Little Bay, and gives the tonnage: 245,860 in 2015, 221,280 in 2016, 267,623 in 2017, 350,685 in 2018 and 399,370 in 2019. The Statistical Compendium for 2019 to 2022 carries the series forward: 422,355 tonnes in 2020, 491,500 tonnes in 2021, and 464,140 in 2022.

Set beside the rest of the economy this is modest and real. The same compendium puts gross domestic product at EC$201.81 million at current prices for 2022, preliminary, with mining and quarrying at EC$6.11 million. The compendium's own table gives that sector 3.38 per cent of GDP; on the two figures as printed we make it closer to three, and we have not been able to reconcile the difference, so we give both. Either way, an island of four and a half thousand people is exporting close to half a million tonnes a year of the thing that ruined it, through a jetty in a dead capital, under a permit regime that officially forbids entry.

The people who stayed, counted

The population did not come back, and the way it did not come back is legible only in the estimates.

The Independent Commission for Aid Impact, reviewing British capital spending, put the pre-eruption population at around 13,000 and recorded 4,922 at the 2011 census. We could not open the Statistics Department's historical census spreadsheet, which runs from 1881 to 2023, so we cannot check that against the 1991 count, and we flag the 13,000 as the Commission's estimate rather than a census figure. The 2018 intercensal count enumerated 4,649 people on 22 September that year, in 2,225 households, against 2,335 households in 2011. The median age went from 37.7 to 40.

Then the 2023 census. Montserrat At A Glance gives a usual resident population of 4,396 and an enumerated household population of 4,265, in 2,262 private households, at an average household size of 1.9 persons. Eight hundred and seventy-five people were aged 65 or over. Look Out is the largest enumeration district, at 600; Isles Bay is the smallest, at 15. Fifty-six per cent of residents were born in Montserrat and forty-four per cent elsewhere — a proportion that has been shifting for two decades, and which is what a small population held roughly level by inward movement looks like from the inside.

The mid-year estimates make the same point in a duller way: 4,519 for 2019, 4,275 for 2022, and 4,325 for 2025 on the Statistics Department's front page. This is not a place emptying out. It is a place that emptied out once, a generation ago, and has since been almost perfectly flat — a few dozen people either way, an ageing median, households of fewer than two.

What the money does instead

Britain pays for the difference between that population and a functioning territory, and has since the emergency. The Commission's review recorded £324 million provided between 1997-98 and 2011-12, half of everything given to all the Overseas Territories over that period, and noted the Gerald's airport, opened in July 2005 at a cost of £8.8 million, whose arrivals fell far short of forecast and which the Montserrat government was by 2011-12 subsidising alongside an airline and a ferry at £732,000 a year.

The current arrangement is more explicit. The Foreign, Commonwealth and Development Office's partnership summary of July 2023 records that in 2023 to 2024 the UK would provide up to £30.32 million to the Government of Montserrat through the Montserrat Budget Support Programme, alongside over £28 million of grant funding through the UK Caribbean Infrastructure Fund for new port facilities at Little Bay. The stated ambition is graduation: helping the territory transition out of financial aid. The same document describes the volcano as relatively quiet since early 2010 while noting that two-thirds of the island remain designated an exclusion zone.

The port is the physical form of the successor island. Approved in December 2017, it was increased in February 2022 by a further £13.9 million on top of £14.4 million already allocated, taking the British grant to £28.3 million against a total cost of over £35 million with £7.1 million from the European Union. Ground was broken on 21 June 2022. It is implemented by the Caribbean Development Bank, whose member profile lists Brades as Montserrat's capital — while the GeoNames gazetteer still records Plymouth as the capital of the political entity, which is the whole administrative afterlife in two database fields. Alongside it sits the Capital Investment Programme for Resilient Economic Growth, £51.5 million since July 2019, aimed at critical infrastructure and the tourism offer. The development tracker's country page gives £15.31 million for 2026-27 across thirteen active programmes.

Why the Silence Index is 59

Physical remoteness earns Montserrat less than people expect: it is twenty minutes by air from Antigua and ninety minutes by seasonal ferry, and the airport is a working scheduled facility. Access friction is genuine but bureaucratic rather than forbidding — Zone V entry needs authorisation and a certified guide, and the machinery for granting it operates every working week for the sand industry. Visitor volume is the input that lifts the score: the Statistics Department recorded 12,877 arrivals by air and 7,092 by sea in 2018, on an island where the resident population is under five thousand. For the fourth input we have used unresolved questions rather than night darkness, because this is a place whose central fact is an open question — the Committee's own reading is a magmatic system still being pressurised beneath a volcano that has not erupted for sixteen years, and nobody will tell you whether the eruption is over. A working island with a scheduled airport, a construction site for a port and an exclusion zone you can enter with a form scores in the high fifties, not the nineties.

What an afterlife looks like

It is tempting to reach for the wrong ending here — either the ruin, photographed at golden hour, or the greenery closing over it. Neither is what the record describes. What the record describes is a committee that meets and produces the same numbers, a government that has read those numbers and chosen to keep its line where it is, a quarry working weekday hours inside the restricted area, a jetty in a buried town loading aggregate for export, a census that counts four thousand three hundred people in two thousand two hundred households of fewer than two, and a British budget line of thirty million pounds a year underwriting the arrangement while both parties talk about graduation.

The eruption ended as a news event a long time ago. What replaced it is administration, and administration is the part that lasts. The honest summary of Montserrat in 2026 is not that it is a disaster site. It is that the disaster was resolved into a set of standing procedures — a hazard level, a permit, a probability table revised annually by a percentage point — and that the people who stayed now live, work and are counted inside those procedures. Whether the line moves before the volcano does is the only open question, and the last authority to consider it decided that it should not.

Corner Codex — D-202

Place: Soufrière Hills, Montserrat (British Overseas Territory)
Coordinates: 16.7103°N, 62.1775°W (GeoNames entry 'Soufriere Hills Volcano')
Eruption began: 18 July 1995, with phreatic activity
Deadliest day: 25 June 1997 — nineteen deaths
Last lava extrusion: 11 February 2010 (SAC) / 12 February 2010 (Smithsonian) — both published
Current phase: 'Pause 5', running sixteen years as of 2026
Hazard Level: 1, on a scale running 0 to 5
12-month odds (SAC 28): 87% nothing significant; 7% extrusion; 3% dome collapse; 4% explosion
Flow risk, Plymouth & Belham: Between 1 in 1,000 and 1 in 10,000 per year
Unheralded eruption into Zone V: About 1 in 25,000 per year
Population: 4,396 usual resident at the 2023 census; 4,325 estimated mid-2025
Sand and aggregate exported: 491,500 tonnes in 2021, the highest year on record
Silence Index: 59 / 100

The Traveler's Panel · checked 22 August 2026

Changing information. Prices, permits, seasons and road access change, sometimes at short notice. Everything here is a starting point for your own confirmation — not a quote, and not a guarantee. Verify with the operator and the relevant official body before you book.

Status	'Pause 5' — no lava extruded since February 2010
Hazard Level	1, on a published scale of 0 to 5
Zones	A, B, C, F unrestricted at Level 1; V is authorised access only; E and W at sea
The odds (SAC 28, Jan 2024)	87% nothing significant in twelve months; 4% explosion
Zone V hazard	SAC 28: some areas are exposed to very low levels of hazard
Who goes in	Sand miners, mostly. Plus escorted tours and observatory staff
Population	4,396 usual resident (2023 census); 4,325 estimated mid-2025
Departure tax	EC$45, or EC$25 for residents

Getting there — Antigua (V.C. Bird) → 20 minutes by air to John A. Osborne Airport, or about 90 minutes on the seasonal ferry

There are two ways in and both go through somewhere else. Montserrat's tourism division routes visitors via V.C. Bird International in Antigua, twenty minutes out, or Princess Juliana in St Maarten, fifty minutes out, into John A. Osborne Airport in the north of the island at 16.7911°N, 62.1931°W. The seasonal ferry from Antigua takes about ninety minutes and is run through the Government of Montserrat's own Access Division. Whichever you choose, you have to satisfy Antiguan or St Maarten entry requirements first.
Entry to the island itself is easy and worth saying plainly, because the exclusion zone tends to colour people's expectations of the whole territory. British citizens enter visa-free for up to 180 days. There is an online immigration and customs form to complete seventy-two hours before travel. Departure costs EC$45, or EC$25 if you live there, usually collected in the air fare.
Entry to Zone V is a different process and it is not a tourist formality dressed up. Access is authorised rather than open: the tourism division's own listing for St George's Hill, reopened after more than thirty years, requires an application through the Disaster Management Coordination Agency, a certified guide, and a five-US-dollar environmental levy per visitor. Guided visits to Plymouth work on the same principle. The machinery exists and is used every working week, largely by the sand industry, but it is a permission and not a right.
The boat tour is the one route that involves no land permission at all: operators run west from Little Bay along the coast past the buried town. Note that there are two maritime exclusion zones, E and W, and that vessels are not permitted to enter them without permission either.
If you want the volcano itself rather than the ruins, the Montserrat Volcano Observatory at Flemmings offers a self-guided visit and appears on the island's longer tour itineraries. It is in the north, well outside the restricted area, and it is where the monitoring described in this dossier actually happens.
Do not plan around the volcano being an event. It has produced no lava for sixteen years and no entry in the Smithsonian's weekly bulletin since September 2023. What you will see is a forested dome, a grey valley, and a working island of about four thousand three hundred people.

Indicative costs — verify before booking

Departure tax	EC$45; EC$25 for residents (FCDO travel advice)
St George's Hill	US$5 environmental levy per visitor, plus a certified guide and a DMCA application
Ferry from Antigua	We could not obtain a published fare. The Access Division portal quotes none, and we are not going to repeat an operator's price as though it were official
Zone V tours	No official tariff is published. Prices are set by individual certified guides
What it costs the UK	Up to £30.32 million in 2023-24 through the Montserrat Budget Support Programme, and £15.31 million programmed for 2026-27

What to pack

Dust protection you would actually wear. The hazard committee's practical worry about people in Zone V is respirable dust and sulphur dioxide, not lava, and it has discussed personal exposure sensors for the workers who go in daily.
Long sleeves, sun cover and more water than you think. The Belham is an open ash plain with no shade and no facilities.
Printed permissions. Zone V access is authorised access; carry the paperwork you were given.
Modest camera expectations. There is no eruption to photograph and has not been for sixteen years; what is there is a grey valley, a jetty and a green dome.
Cash in EC dollars for levies and guides, and a plan that does not assume card payment.

Where to stay

Everything is in the north, because that is where everyone lives. The 2023 census counts 4,396 usual residents across 2,262 private households at an average household size of 1.9, with Look Out the largest enumeration district at 600 people and Isles Bay the smallest at 15 — which gives a fair sense of the scale of the accommodation market. Brades, at 16.7917°N 62.2106°W, functions as the seat of government and is the capital in the Caribbean Development Bank's listing, though the GeoNames gazetteer still carries Plymouth in that role. Salem and the Woodlands area, south of Brades and north of the Belham, are where most visitor accommodation has settled; Little Bay, currently a construction site for the new port, is the intended commercial centre of the successor island. There are no hotels of any size and there is no resort strip. Expect guesthouses, villas and self-catering, and expect to book direct.

Safety & responsible travel

Do not enter Zone V unescorted, and do not treat the low hazard figures in this dossier as permission. SAC 28's low numbers are conditional on monitoring, warning and controlled access; they are an argument about how a boundary should be drawn, not an invitation to cross one.
Do not photograph private homes in the restricted area as ruins. Plymouth and the southern villages belong to people who are alive, most of whom live an hour's drive north, and some of whom lost relatives on 25 June 1997.
Book through certified guides and pay the environmental levy. That is the mechanism by which controlled access continues to exist, and undercutting it is how it stops.
Give sand-mining vehicles and the Plymouth jetty a wide berth. That is a workplace on a working day, not scenery.
Be careful how you describe the island afterwards. 'Abandoned', 'modern Pompeii' and 'ghost island' are all wrong about a territory with a census, a scheduled airport, a port under construction and an export industry.

Nearby, and quieter

The Centre Hills, the forested massif between the volcano and the northern settlements, hold the island's protected terrestrial habitat: the 2020 Environmental Compendium gives 2,745 acres of protected forest at Centre Hills and 63 acres at Silver Hills, with terrestrial protected areas together making up about 11% of the land area, on an island of 39.5 square miles of which only 15.5 are unrestricted and inhabitable. The observatory at Flemmings is the other thing worth the detour, and it is genuinely unusual: a working monitoring station that will show you the seismic and deformation record this dossier is built on. Further afield, Antigua is twenty minutes by air and is where almost every visitor changes planes; the ferry crossing is ninety minutes and seasonal. And the old W. H. Bramble Airport, recorded in the gazetteer as an abandoned airfield at 16.7608°N 62.1586°W, sits inside the restricted zone on the east coast — the clearest single marker of what the eruption cost and of why the north had to build a second one.

Getting there, in order

1Antigua (V.C. Bird)
↓
220 minutes by air to John A. Osborne Airport, or about 90 minutes on the seasonal ferry

Each leg is a separate booking and a separate chance to be weathered out. Build spare days into the chain, not onto the end of it.

Where it is

Soufrière Hills and Zone V, Montserrat · 16.7103°N 62.1775°W · Open in Google Maps · OpenStreetMap

Key locations

Soufrière Hills Volcano — GeoNames volcano entry; no lava extruded since February 2010
16.7103°N 62.1775°W
Plymouth — still listed by GeoNames as capital of the political entity; jetty used for aggregate export
16.7056°N 62.2128°W
Belham River — the sand-mining valley; SAC 28 puts flow probability here at 1 in 1,000 to 1 in 10,000 a year
16.7306°N 62.2014°W
Saint George's Hill — viewpoint reopened to escorted visitors; DMCA application, guide and US$5 levy
16.7208°N 62.2114°W
Brades — seat of government; the capital in the Caribbean Development Bank's member profile
16.7917°N 62.2106°W
Little Bay — site of the £28.3m UK-funded port; quarrying also recorded behind the Port Authority
16.7997°N 62.2036°W
John A. Osborne Airport — opened July 2005 at a cost of £8.8m; 20 minutes from Antigua
16.7911°N 62.1931°W
W. H. Bramble Airport — recorded by GeoNames as an abandoned airfield, inside the restricted zone
16.7608°N 62.1586°W

Coordinates are for orientation and are accurate to roughly the width of the feature named, not to a doorway. Several of these points are inside protected areas or need a permit, a guide or a boat — read the access notes above before you plan a route to any of them.

Sources & further reading — checked 22 August 2026

Montserrat Volcano Observatory / Scientific Advisory Committee — 28th Report of the Scientific Advisory Committee on Montserrat Volcanic Activity (30 January 2024, meeting 27–30 November 2023). The elicited twelve-month probabilities of 87%, 7%, 3% and 4% with the previous round's 85%, 8%, 3.5% and 2.8%; the pause dated to 11 February 2010; the finding that some areas within Zone V are exposed to very low levels of hazard; PDC inundation probabilities of 1/1,000 to 1/10,000 for Plymouth and the Belham valley; the 0.004% or one-in-25,000 unheralded-eruption figure; the Government's refusal to change or microzone Zone V; sand mining as the vast majority of Zone V visits; SO2 fluxes of 111–648 t/d averaging 303; VT rates of 1.72/day against a pause average of 0.79; and inferred magma influx of 0.10–0.57 m³/s at about 6 km
Montserrat Volcano Observatory — front page, hazard level and SAC 29 / SAC 30 preliminary statements (read August 2026). Hazard Level 1 with no public access to Zone V including Plymouth; and the preliminary statements of the 29th and 30th Scientific Advisory Committee meetings, both recording that activity has remained low and broadly consistent with the levels of unrest observed since 2019, with some changes in seismicity
UK Foreign, Commonwealth and Development Office — Montserrat travel advice: regional risks (current July 2026). The hazard level given as 1 on a scale of 0 to 5; five land zones A, B, C, F and V of which only V is enforced; unlimited access to A, B, C and F at Hazard Level 1 with Zone V authorised access only; maritime exclusion zones E and W; 24-hour monitoring by the observatory; and the island-wide siren system tested daily at midday
UK Foreign, Commonwealth and Development Office — Montserrat travel advice: safety and security. The statement that the volcano has been active since 1995 but that there has been no major volcanic activity since February 2010; that the volcano is in a prolonged pause but may still emit ash clouds and gases; and that the 40% of the island not directly affected remains prone to ashfall on a southerly wind
UK Foreign, Commonwealth and Development Office — Montserrat travel advice: entry requirements. Visa-free entry for British citizens for up to 180 days; the online Immigration and Customs form to be completed 72 hours before travel; embarkation tax of EC$45, or EC$25 for residents; and the requirement to satisfy Antiguan or St Maarten entry rules in transit
UK Foreign, Commonwealth and Development Office — UK–Montserrat development partnership summary, July 2023. Up to £30.32 million in 2023-24 through the Montserrat Budget Support Programme; over £28 million in UKCIF grant funding for the Little Bay port; a population of around 4,500 with a mid-2022 estimate of 4,275; the volcano described as relatively quiet since early 2010 with two-thirds of the island still designated an exclusion zone; and the stated aim of graduation from ODA
GOV.UK / FCDO — 'UK provides additional funding to boost port development in Montserrat' (15 February 2022). An additional £13.9 million on top of £14.4 million already allocated, taking the UK grant to £28.3 million against a total project cost of over £35 million including £7.1 million from the European Union; original approval in December 2017; and components including an offshore jetty, access road, dredging and slope stabilisation design
GOV.UK — 'Montserrat Port Development Project: Governor Sarah Tucker's remarks' (21 June 2022). The ground-breaking ceremony on 21 June 2022 for the £28 million Little Bay Port Development Project, funded by the UK and implemented by the Caribbean Development Bank, described as a climate-resilient facility for cargo vessels and cruise ships
FCDO Development Tracker — Montserrat country page. Thirteen active programmes and a current financial year budget for 2026-27 of £15.31 million — the figure used in this dossier for present-day British programme spending on the territory
FCDO Development Tracker — Montserrat active programmes list. The Montserrat Capital Investment Programme for Resilient Economic Growth (CIPREG), GB-1-204712, at £51,468,937 from 24 July 2019; Darwin Plus at £7,126,876.73; Improving Essential Equipment for aided Overseas Territories at £27,892,546; and the Overseas Territories Border Security and Projects Fund programmes
FCDO Development Tracker — CIPREG programme summary (GB-1-204712). The programme's stated objective of achieving economic growth on Montserrat and enhancing resilience against natural disasters and economic shocks through improvement of critical infrastructure and enhancement of the tourism offer; status given as implementation
FCDO Development Tracker — CIPREG programme documents. The document trail for the programme: business case and addendum of August 2022, a logical framework of March 2024, and annual reviews dated July 2020, August 2022, November 2022, March 2024, February 2025 and June 2026 — the last of which we could not read
Independent Commission for Aid Impact — 'DFID's Support to Capital Projects in Montserrat' (HTML version, review published July 2013). £324 million provided between 1997-98 and 2011-12, being 50% of all aid to the Overseas Territories in that period; a pre-eruption population estimated at around 13,000 falling to 4,922 at the 2011 census; the Gerald's airport at £8.8 million opened July 2005; a £732,000 annual subsidy to airport, airline and ferry; the destruction of Plymouth's schools, government buildings, hospital, air access, energy generation and port; and two-thirds of the island designated a special vulnerable area
Statistics Department, Government of Montserrat — Population and Demography. The mid-year population estimate for 2019 of 4,519, and the catalogue of demographic datasets including the Mid-Year Population Estimates 2019–2025 and the Historical Population Profile for censuses 1881 to 2023, both published only as spreadsheets
Statistics Department, Government of Montserrat — departmental front page (read August 2026). The mid-year population estimate for 2025 of 4,325 residents, and the department's subject structure covering economic, environmental and social statistics — the source of this dossier's most recent population figure
Statistics Department, Government of Montserrat — 'Montserrat At A Glance 2023'. The 2023 census: usual resident population 4,396 and enumerated household population 4,265; 2,262 private households at an average size of 1.9 persons; 875 people aged 65 and over; Look Out the largest enumeration district at 600 and Isles Bay the smallest at 15; 56% born in Montserrat against 44% born elsewhere; and literacy at 97.7% for those aged 10 and over
Statistics Department, Government of Montserrat — Census 2023 page. The census output set: 'Montserrat At A Glance 2023', the labour force key indicators infographic and press release, the quick indicators infographic and the census press release — most of it published as images rather than as tables
Statistics Department, Government of Montserrat — 'Intercensal Population Count and Labour Force Survey 2018: Key Findings Report'. An enumerated population of 4,649 as at 22 September 2018, against 4,922 in 2011; 2,225 households against 2,335 in 2011; median age rising from 37.7 to 40 years; a working-age population of 3,025; and Montserratian citizens falling from 72% to 63% of residents
Statistics Department, Government of Montserrat — Statistical Compendium 2019–2022. Sand and aggregate exports of 422,355 tonnes in 2020, 491,500 in 2021 and 464,140 in 2022; GDP at current prices of EC$201.81 million for 2022 preliminary, EC$190.47 million for 2021 and EC$180.49 million for 2020; and mining and quarrying at EC$6.11 million in 2022, given in the compendium's own table as 3.38% of GDP
Statistics Department, Government of Montserrat — 2020 Environmental Compendium, 2015 to 2019 series. Sand and aggregate export tonnages of 245,860 (2015), 221,280 (2016), 267,623 (2017), 350,685 (2018) and 399,370 (2019); the statement that quarrying of sand and aggregate is located in the exclusion zone and behind the Montserrat Port Authority at Little Bay; a pre-eruption land area of 39.5 square miles; and 15.5 square miles of unrestricted inhabitable land in the north
Statistics Department, Government of Montserrat — Merchandise Trade. The department's own one-line description of the sector — that Montserrat has a mining industry which exports sand and aggregate — together with the quarterly trade series for domestic exports, re-exports and imports to March 2026
Statistics Department, Government of Montserrat — Tourism and Travel. The figure of 12,877 arrivals by air and 7,092 arrivals by sea for 2018, used here as this dossier's footfall input, and the catalogue of monthly and annual visitor series running from 2005 to 2024
Statistics Department, Government of Montserrat — Data Tables index. The full inventory of published series — population, tourism, trade, national accounts, electricity, education and vital statistics — establishing that the department publishes its numbers almost exclusively as spreadsheet downloads rather than as readable tables
Statistics Department, Government of Montserrat — Publications. The published report set, including the 2018 intercensal key findings report, the Labour Force Survey 2020 key findings, the 2020 Environmental Compendium and the Statistical Compendium for 2019 to 2022
UWI Seismic Research Centre — Volcanic Hazard Atlas of the Lesser Antilles, Montserrat chapter. Phreatic activity beginning 18 July 1995; the 25 June 1997 collapse releasing 6.4 x 10^6 m³ of material in three pulses with flow speeds of about 40–60 m/s near the dome; nineteen deaths from that event; the phases of dome growth to 2004; and the exclusion zone described as encompassing the area of highest hazard with boundaries occasionally adjusted
UWI Seismic Research Centre — Montserrat volcano pages. The centre's Montserrat holdings and the route to the Volcanic Hazard Atlas chapter; useful here mainly for confirming that the regional seismic body publishes no current Soufrière Hills bulletin of its own
Smithsonian Institution, Global Volcanism Program — Soufrière Hills (volcano number 360050). The eruption dated from 1995 with a most recent eruption end of 2013; the dome collapse of 11 February 2010 followed by an extended pause; and the summary that the eruption forced evacuation of the southern half of the island and destroyed Plymouth
Smithsonian Institution, Global Volcanism Program — Soufrière Hills weekly reports. That the most recent weekly report is for 6–12 September 2023, recording small rockfalls coincident with volcano-tectonic earthquakes during 1–8 September, and that the report before it dates to 26 January–1 February 2022 — the basis for this dossier's point that the volcano has stopped generating bulletins
Smithsonian Institution, Global Volcanism Program — Soufrière Hills eruptive history. The statement that Pause 5 began on 12 February 2010 and was over 50 months long as of March 2014 — one day later than the Scientific Advisory Committee's date, which is why this dossier prints both
Montserrat Tourism Division — visitmontserrat.com front page. The Buried City tour of Plymouth by certified guide; the Soufrière Hills boat tour running west from Little Bay; St George's Hill reopened after more than thirty years and requiring application through the Disaster Management Coordination Agency, certified guides and a US$5 environmental levy per visitor; and the Day of Discovery tour including the observatory
Montserrat Tourism Division — Getting Here. Connections through V.C. Bird International in Antigua or Princess Juliana in St Maarten to John A. Osborne Airport; a 20-minute flight from Antigua and 50 minutes from St Maarten; and a seasonal ferry from Antigua of about 90 minutes operated through the government's Access Division
Government of Montserrat Access Division — Montserrat ferry service. The official ferry portal for the Antigua crossing, operated through the Access Division — checked here because no published fare could be obtained, and none is quoted in this dossier
Caribbean Development Bank — Montserrat member profile. Montserrat as a founding member of the bank with a shareholding of 0.19% as at 31 December 2023; a land area of about 102 square kilometres; the capital given as Brades; and the Montserrat Port Development Project (UKCIF) listed under transportation
National Audit Office — 'Foreign and Commonwealth Office: Managing risk in the Overseas Territories', HC 4 2007-08 (16 November 2007). The finding that the UK bears the ultimate risk of potential liabilities from its overseas territories such as Anguilla, Montserrat and the Falkland Islands — the constitutional background to a budget support programme that has now run for three decades
GeoNames gazetteer — Plymouth, Montserrat. Plymouth recorded at 16°42'20"N, 62°12'46"W and still classified as capital of a political entity, twenty-nine years after it was abandoned — the gazetteer counterpart to the Caribbean Development Bank listing Brades
GeoNames gazetteer — populated places in Montserrat. Coordinates for Brades at 16°47'30"N 62°12'38"W, Little Bay at 16°47'59"N 62°12'13"W, Salem at 16°45'03"N 62°13'18"W and the abandoned southern settlements including Richmond, Gages and Webbs — the source of every settlement coordinate in this dossier
GeoNames gazetteer — Soufrière Hills. Three entries: Soufrière Hills (hills) at 16°42'58"N 62°09'58"W, South Soufrière Hills (mountains) at 16°41'25"N 62°10'22"W, and Soufriere Hills Volcano at 16°42'37"N 62°10'39"W — the last being the coordinate used here
GeoNames gazetteer — airports in Montserrat. John A. Osborne Airport at 16°47'28"N 62°11'35"W, and W. H. Bramble Airport recorded as an abandoned airfield at 16°45'39"N 62°09'31"W — the old airport lying inside the restricted zone and the new one in the north
GeoNames gazetteer — Belham River. The Belham River recorded as a stream at 16°43'50"N, 62°12'05"W — the valley in which the Scientific Advisory Committee places both the sand mining operations and one of the two named areas in the 1-in-1,000 to 1-in-10,000 flow probability band
GeoNames gazetteer — Saint George's Hill. Saint George's Hill recorded twice, as a mountain at 16°43'15"N 62°12'41"W and as an abandoned populated place at 16°43'26"N 62°12'31"W — the viewpoint reopened to escorted visitors after more than thirty years

Official and scientific bodies are the authority for safety, regulatory and scientific claims. Commercial operators are used only for practical detail such as tour length, meeting points and indicative pricing — never for a safety or scientific statement.

How this was made

Desk research. Compiled from official bodies, scientific and conservation sources, established journalism and licensed operators. Not based on a personal visit.

Editor’s method note — what we checked, corrected and could not verify

Desk research only. Nobody from this publication has been to Montserrat, and this dossier makes no claim to have seen Plymouth, the Belham valley or the dome.
Every URL cited was opened and read before citation. Sources that could not be opened are listed at the end of this note and are cited nowhere in the piece.
This dossier was commissioned to check its probability figures against the 30th report of the Scientific Advisory Committee, understood to have been published in April 2026. We could not do it. The Montserrat Volcano Observatory's reports index at mvo.ms would not load for us on any of roughly a dozen attempts across several hours: the host's certificate chain fails verification, and every request returned a robots error. Every probability, flux, seismicity and deformation figure in this piece therefore comes from SAC 28, dated 30 January 2024, and is attributed to it in the text. We reached the observatory's front page, which carries the preliminary statements of SAC 29 and SAC 30, and both say activity has remained low and broadly consistent with the unrest observed since 2019, with some changes in seismicity. That is all we can responsibly report of the two newer reports.
Where sources disagree we print both. The pause is dated 11 February 2010 by the Scientific Advisory Committee and 12 February 2010 by the Smithsonian's Global Volcanism Program. Montserrat's capital is Brades in the Caribbean Development Bank's member profile and Plymouth in the GeoNames gazetteer. Mining and quarrying is 3.38% of GDP in the Statistical Compendium's own table and closer to 3% on the two figures the same document prints. We have not averaged or resolved any of these.
The Statistics Department publishes almost all of its series as spreadsheet downloads, which we could not parse. The 2023 census totals in this piece come from the department's published PDF, 'Montserrat At A Glance 2023'; the 2019 mid-year estimate from its Population and Demography page; and the 2025 mid-year estimate from its front page. We did not open the underlying workbooks and do not quote from them.
The pre-eruption population figure of around 13,000 is the Independent Commission for Aid Impact's, and the Commission describes it as an estimate. Because the department's historical census workbook covering 1881 to 2023 could not be read, we were unable to check it against the 1991 census total, and we do not present it as a census figure.
The nineteen deaths of 25 June 1997 are stated once, from the UWI Seismic Research Centre's hazard atlas chapter, and are not returned to. This dossier is about the period after the eruption ceased to be news, and we have deliberately kept the emergency to a single paragraph.
Sand and aggregate export tonnages are the Government of Montserrat's own, taken from two official compendia that overlap in 2019 and agree on that year at 399,370 tonnes. We could not obtain any figure later than 2022, nor the identity of the operators, nor any royalty or licence income, and we do not estimate them.
Coordinates come from the GeoNames gazetteer. Zone V's boundary is not reproduced here and no coordinate in the panel should be read as marking it; the boundary is published by the Government of Montserrat and by the observatory, and we were unable to open either map.
Sources we could not read, and therefore did not cite: the Montserrat Volcano Observatory's reports index and the full SAC 29 and SAC 30 reports, robots and certificate failures; gov.ms and dmca.ms, certificate and DNS failures, which is why the hazard-level and zone definitions are taken from FCDO travel advice instead; every Statistics Department spreadsheet, including the Mid-Year Population Estimates 2019–2025, the Historical Population Profile 1881–2023, and the tourism and merchandise trade workbooks, all unparseable binaries; the Microsoft Office web viewer, which we tried as a route into those workbooks and which is robots-disallowed; the Internet Archive, rejected at the network layer; the CIPREG annual reviews and business cases on iati.fcdo.gov.uk, which are OpenDocument binaries; the British Geological Survey's Montserrat project page, 404; and the Caribbean Development Bank's project record for the port, which we could not locate from the member profile.
Things we could not verify: whether the SAC 30 probability table differs from SAC 28's, which was the central question we were sent to answer; the length of the current pause in relation to pauses at comparable dome volcanoes, which SAC 28 does not discuss; how many individual entries into Zone V are authorised in a year, and by whom; the identity, ownership and export destinations of the sand-mining operators, and any royalty paid to the Government of Montserrat; sand tonnages after 2022; whether the Little Bay port was completed, the stated expectation having been 2024 and no completion notice being traceable; the current status of any 'access to Plymouth' road or heritage project, which we could not source at all; the current price of the ferry crossing or of an escorted Zone V tour, no official tariff being published; the 1991 census population; and whether the Government of Montserrat has revisited its decision against microzoning since January 2024.

AI is used to draft this text, and a human checks it. Every figure, date and quotation above was verified by Tony Hall against the source cited for it in the reference list; where sources disagree, the disagreement is shown rather than resolved, and where a claim could not be confirmed it is either marked unverified or left out. The illustrations are AI-created and labelled as such — no photograph on this site is presented as a record of a real place. Full disclosure · Editorial policy.

Access details change — recheck before you travel. Found an error? Tell us — corrections are dated and shown in place.

Pause Five: Montserrat's Exclusion Zone Is a Line, Not a Verdict