Rockall () is a , uninhabitable granite islet in the North Atlantic Ocean. It is west of Soay, St Kilda, Scotland; north-west of Tory Island, Ireland; and south of Iceland. The nearest permanently inhabited place is in North Uist, east in Scotland's Outer Hebrides.
The granite rock from which Rockall is comprised formed during the Paleogene period, by magmatism as part of the North Atlantic Igneous Province. Rockall, Hasselwood Rock, 200 metres north, and the skerries of Helen's Reef two kilometers to the northeast are the only emergent parts of the Rockall Plateau. Twenty-nine-metre waves just east of Rockall were reported in 2006 as the largest ever recorded by scientific instruments in the open ocean.
Rockall has appeared on maps since at least 1550 and in literature since at least 1698. Marine surveyors, scientists, adventurers, amateur radio operators, and environmental activists have variously landed on or briefly occupied the islet. The earliest documented landing on Rockall was in 1811 by a small Royal Navy party led by Basil Hall. Rockall's first named geographic location and only occupiable area is Hall's Ledge, named after Basil Hall. The longest known continuous occupation is 45 days, achieved solo in 2014 by Nick Hancock, a surveyor from Edinburgh.
Possession of Rockall was for many decades deemed imperative to claims to the vast surrounding fisheries and oil-rich Atlantic seabed. The Irish Times claims to have reported on the economic value of Rockall's fisheries as long ago as 1861. Driven by Cold War national security concerns, the United Kingdom claimed Rockall in 1955 and incorporated it as part of Scotland in 1972. The UK claims a territorial sea at Rockall. While never claiming sovereignty of Rockall, Ireland maintains that UK claims to Rockall are invalid. Denmark (on behalf of the Faroes) and Iceland have lodged claims of the adjoining seabed.
Etymology The origin and meaning of the name Rockall is uncertain. The name is used in Scots Gaelic folklore for a mythical rock that is supposed to appear three times, its last appearance being at the end of the world: "". ('When Rocabarra returns, the world will likely come to be destroyed'). Another idea is the name Rockall derives from the Gaelic , meaning 'skerry of roaring' or 'sea rock of roaring', although can also be translated as 'tearing' or 'ripping'.
The Scottish Gaelic name for Rockall, , may derive from an Old Norse name that may contain the element , meaning 'mountain'. It is also suggested the name Rockall is from the Norse , meaning 'foaming sea', and , meaning 'bald head'—a word that appears in other place names in Scandinavian-speaking areas.
Legends around the seafaring Irish monk Brendan the Navigator state that he described Rockall in the sixth century.
Irish mythology giant Fionn mac Cumhaill (Finn McCool) allegedly scooped up a chunk of what is now Ulster to fling at a Scottish rival. It missed, instead landing in the Irish Sea to become the Isle of Man. The void left behind filled with water to become Lough Neagh. McCool is then alleged to have thrown a pebble"The Wolfe Tones say they will defend island at center of Ireland/Scotland battle" irishcentral.com Jun 12, 2019 that became what is now widely known as Rockall—alternatively, the pebble flew off north-west as he lifted the chunk of land or when it landed into the sea.
Rockall appears on a 1550 Portuguese chart as 'Rochol', and on one of 1606 as 'Rocol'. The map Nova Francia alio nomine dicta Terranova, anno 1504 ( 1594), by , Jan Doetecom, and Petrus Plancius, shows Rockall named Rookol."Nova Francia alio nomine dicta Terranova" raremaps.com
Rockall is named Rokol in its first-known literary reference, Martin Martin's 1698-published A Late Voyage to St Kilda. The book states: "... and from it lies Rokol, a small rock to the westward of St Kilda; the inhabitants of this place call it Rokabarra."
Location In 1956, British scientist James Fisher referred to Rockall as "the most isolated small rock ... in the oceans of the world".Fisher (1956) pp.12–13 An all round navigational beacon was first installed on Rockall's summit in 1972."Decapitating Rockall: How a 1970s Navy expedition blasted the top off the Atlantic islet" theregister.co.uk Gareth Corfield, Wed 22 Mar 2017 Rockall's location was precisely determined by Nick Hancock during his 2014 expedition.
Rockall's nearest land point is the uninhabited Soay, east in Scotland's St Kilda archipelago. Rockall's nearest inhabited area is Hirta, St. Kilda's largest island, east and populated intermittently at a single military base. Rockall's nearest permanently inhabited settlement is near Hogha Gearraidh crofting township, which is located east of Rockall on North Uist's Aird an Rùnair headland, at Ordnance Survey grid reference .
Rockall is north-west of Tory Island, County Donegal, Ireland. Rockall is also south of Iceland.
History Earliest mentions What is now known as Rockall appears in Scots and Irish mythology (see "Etymology" section above). Rockall appears on maps from 1550 onward."FAQs - The Rockall Club" therockallclub.org Retrieved 12 October 2014 The first-known literary reference to the islet is in Martin Martin's A Late Voyage to St. Kilda, published in 1698 (see "Etymology" section above).
Shipping disasters
There have been various disasters on the neighbouring Hasselwood Rock and Helen's Reef (the latter having been named in 1830).
1686 – a Spanish, French, or Spanish-French ship ran aground around Rockall. Several of the Spanish and French crew saved their lives by reaching St. Kilda in a pinnace. Some details of this event were recounted by Martin Martin in his A late voyage to St Kilda, published in 1698. 1824 – Brigantine Helen of Dundee, bound for Quebec, shipwrecked with fatalities, giving its name to what subsequently became known as Helen's Reef. 1839 – Charlotte of Hull wrecked on Rockall around Christmas 1904 – Danish ship SS Norge foundered on Hasselwood Rock in fog with the loss of more than 635 of its 750 passengers. The sinking remains the worst maritime disaster involving a Danish merchant ship, and was at the time the worst civilian disaster in the Atlantic Ocean—until the Titanic sank eight years later. The Norge sinking led to a proposal by D. & C. Stevenson for an unattended lightship to be moored close to the rock.
Recorded visits to Rockall In 1971, Lord Kennet remarked, "There can be no place more desolate, despairing and awful."
The website for The Rockall Club as at July 2025 states, "Total authenticated Rockall landings to date: 146 individuals".
HMS Endymion – Rockall's first landing
The earliest recorded landing on Rockall is often dated 8 July 1810. Royal Navy officer Basil Hall has been reported leading a small landing party from the frigate to the summit. However, research by James Fisher (see "Location" section above), in the log of Endymion and elsewhere, reports the actual date for this first landing was Sunday 8 September 1811.Fisher (1956) chapter 2 "Endymion: the first landing on Rockall; Basil Hall"
The landing party left Endymion for the rock by boat. Endymion, while taking depth measurements around Rockall, lost visual contact with the rock as a haze descended. The ship drifted away, stranding the landing party. The party attempted a return to the ship, but in the haze could not find Endymion, and soon gave up to return to Rockall.
The haze became a fog. The lookout sent to the top of Rockall re-spotted the ship, but it turned away from Rockall before the party in their boats reached it. Finally, just before sunset, Endymion was again spotted from the top of Rockall, and the party was able to re-board. The Endymion crew reported they had searched for five or six hours, firing their cannon every ten minutes. Hall related this and other adventures in his book Fragment of Voyages and Travels Including Anecdotes of a Naval Life.
19th-century surveying and scientific visits The exact position of Rockall and the size and shape of the Rockall Bank were first charted in 1831. This was by Captain A. T. E. Vidal, a Royal Navy surveyor. It is uncertain if this visit produced a landing.
In the summer of 1862, Mr Johns of landed on Rockall but did not reach the summit. This was whilst the ship was surveying the seabed prior to the laying of a transatlantic telegraph cable.
Miller Christy in 1896 led Rockall's first scientific expedition. The Royal Irish Academy chartered the Granuaile,Fisher (1956) chapter 5 "Granuaile: the first scientific expedition to Rockall" and sponsored Christy's study of the flora and fauna. Two landing attempts were unsuccessful. Irish naturalist Robert Lloyd Praeger, who was on the trip, described it in his 1937 memoir The Way That I Went: Eventually we put out a sea-anchor, and drifted to leeward all night, pitching and rolling. Next morning at 3.45 we were awakened by a cry of "Rockall at last". We rushed on deck in all sorts of costume or absence of costume. And there it was, half a mile to windward, a solitary speck of rock amid the wilderness of foam-flecked billows [..] All day we hung about the rock, coming at intervals as close as we dared [..] The sea roared about the rock, often enveloping it in foam two-thirds of the way up...
British annexation
The initial incentive for UK annexation of Rockall was the test-firing of the UK's first guided nuclear weapon, the American-made Corporal missile. The missile was to be launched over the North Atlantic from South Uist. The Ministry of Defence was concerned that the unclaimed Rockall could give the Soviet Union opportunity to spy on the test. Thus, in April 1955, the Admiralty was ordered to seize Rockall and declare UK sovereignty, lest it became a foreign observers' outpost.
On 18 September 1955, Rockall was annexed by the British Crown. To do so, four men were winched onto the islet by a Royal Navy helicopter from (coincidentally named after the man who first charted the islet). The four were Lieutenant-Commander Desmond Scott RN, Sergeant Brian Peel RM, Corporal AA Fraser RM, and James Fisher (a civilian naturalist and former Royal Marine). The Admiralty announced the annexation on 21 September 1955. Fisher took rock samples for study by the British Geological Society.
The landing team cemented in a brass plaque on Hall's Ledge and hoisted the Union Flag to stake the UK's claim. The plaque inscription read:
Author Ian Mitchell opined Rockall was terra nullius (owned by no one), until the 1955 British claim.Ian Mitchell, "Isles of the North", 2012, Birlinn, 978-0-85790-099-9, page 232, Rockall was the British Empire's final territorial expansion.
On 7 November 1955, J. Abrach Mackay, an 84-year-old local councilor and member of the Clan Mackay, protested the annexation; he declared: "My old father, God rest his soul, claimed that islet for the Clan of Mackay in 1846 and I now demand that the Admiralty hand it back. It's no' theirs." The British Government ignored his protest.
Deploying an all-round light beacon In 1971, Captain T. R. Kirkpatrick RE led the landing party on a British government expedition named "Exercise Top Hat". Top Hat was mounted from with two aims:
The principal aim of the exercise was to lay a flat surface on the top of Rockall so that an all-round visual light could be erected in future. This was achieved by blowing the top off Rockall, leaving a flat area of . A secondary aim was to deck qualify one holdover pilot.
Both aims were achieved. The landing party included Royal Engineers, Royal Marines, and civilian members from the Institute of Geological Sciences in London. The party was landed by winch line from the Wessex 5 helicopters of the Royal Naval Air Services Commando Headquarters Squadron, commanded by Lt Cmdr Neil Foster RN.