Overview
Inishtrahull (Irish: Inis Trá Tholl, possibly ‘island of the empty beach’) lies north-east of Malin Head, with the smaller Tor Rocks farther north. It covers just 34 hectares: a low, treeless plateau edged by cliffs and rocky pinnacles. The exposed gneiss, called Inishtrahull Gneiss, is among the oldest rock in Ireland, part of the same ancient Rhinns complex exposed on Islay and Colonsay in Scotland, a reminder that this corner of Donegal was once welded to a different landmass entirely.
Its cliffs are part of a Special Area of Conservation, and the bird protection area includes the island, the rocks and the sea between them, making it a sanctuary for breeding seabirds, grey seals and other marine life.
A brief history
A small fishing and farming community took root here in the early 19th century, reaching around 40 people by 1881 and peaking at roughly 80 in the 1911 census. At its height the island had a school, a graveyard and a cluster of stone cottages on the plateau. Decline set in during the 1920s as foreign trawling stripped the local fishing grounds, and by 1929 the last families were taken off. Only the lighthouse keepers stayed on, until automation reached the station in 1987.
Irish Lights identifies the light on Inishtrahull as Ireland’s northernmost lighthouse. The first light came into service at the east end in 1812. The current lighthouse stands farther west and remains a navigation aid. The old east-end tower was demolished in 1959 to stop it obscuring the new light, leaving only its stone foundations.
What to see and do
The west-end lighthouse is the landmark. It is best seen from a distance, from Malin Head on a clear day or from the water. The island was once home to a community, and the remains of the village survive on the central plateau: low stone walls, cottage foundations and the small graveyard, the bones of the community that left in 1929. Stay off the lighthouse site.
Arranging a visit
There is no regular ferry service to Inishtrahull. Look across from Malin Head on a clear day. Any boat trip depends on the weather and on what the operator offers. Confirm whether a trip only passes the island and whether any landing has the necessary permission, and check the sailing is going ahead on the morning itself, as Atlantic conditions here turn quickly.
If landing is permitted, expect no public facilities on the island, so bring what you need, take all rubbish back to the mainland and keep clear of nesting birds. Dress in layers and bring waterproof outerwear, as the island is completely exposed and treeless. Contact Irish Lights for current information about the station.
Wildlife & Conservation
The island’s protected status safeguards one of the most productive seabird habitats on Ireland’s north coast. In summer the cliffs and rocks host breeding seabirds, and grey seals can be seen on the rocks. Pack binoculars, watch from a distance and keep clear of nesting or resting birds.
Seasonal Highlights
- Late spring and summer: Peak seabird breeding season. The cliffs and rocks are alive with nesting birds, so give them room.
- Summer: Good for seal watching, from the water or at a distance.
- September: Quieter, while late-summer seabirds are still active. Boat trips of any kind depend on the weather.
Nearby Attractions
- Banba’s Crown – Ireland’s northernmost mainland point, a short drive from Malin Head, featuring dramatic cliffs and sweeping Atlantic vistas.
- Arranmore Island – Another Donegal island with its own lighthouse, walking trails, and a settled year-round community, reached from Burtonport.
Further resources
- Official lighthouse information: Commissioners of Irish Lights – Inishtrahull Lighthouse
If the weather turns and no boat runs, Malin Head is worth the visit on its own, with the island on the horizon.