Overview
Blackrock Island (Irish: Tór Mór) lies about 12 miles west of Blacksod Bay, off the Mullet Peninsula in County Mayo. The rocky outcrop rises roughly 70 metres (230 ft) above sea level and is often shrouded in mist, giving the impression of a solitary volcano on the horizon. A 15‑metre (50‑ft) round stone tower painted stark white crowns the island, its lantern flashing a white‑and‑red signal every 12 seconds and visible for up to 22 nautical miles. The island forms part of a small cluster that includes Fish Rock, Carrickaduff and Carrackabrown, and the surrounding waters are famed among sea anglers for blue shark, porbeagle, halibut and bluefin tuna.
History
The need for a light on Blackrock was raised in the early 19th century, but the Board of Trade only gave statutory sanction in 1857. In December 1861 the first‑order dioptric revolving apparatus was ordered from Chance Brothers, and the lantern from Neilkins. Harsh winter seas delayed delivery until the summer of 1863, when the equipment could finally be landed on the rock.
Construction of the circular tower began in 1862 using stone quarried on the island itself. The light was first exhibited on 1 June 1864, flashing white to sea and red to land every 30 seconds. At that time the lantern stood 86 m above high water, giving a nominal range of 22 miles.
The station endured several dramatic episodes:
- August 1940 – A German Condor bomber, targeting the nearby SS Macville, strafed the tower, shattering lantern panes and damaging the roof. The keepers escaped unharmed.
- September 1937 – Keeper Patrick Monaghan was swept from the tower by a freak wave, a tragedy later recounted in RTÉ’s documentary Good Day at Blackrock.
- Winter 1942‑43 – A severe storm destroyed the landing stage and derricks, leaving three keepers stranded for weeks until supplies were air‑dropped.
- 1969 – Reliefs switched from boat to helicopter, a practice that soon became permanent for western rock stations.
- 1974 – The lighthouse was automated; the resident keepers were withdrawn and the light was converted to an acetylene‑gas revolving optic, flashing a single white‑red flash every 12 seconds.
- 1999 – A solar‑power system was installed, comprising 24 × 50 W panels, a 12 kW auxiliary generator and a PRL400 electric lantern with a 35 W discharge lamp. The modern system retains the historic characteristic while drawing power solely from the sun.
Today the station is looked after by an Irish Lights attendant and his assistant, who visit periodically for routine maintenance via the helipad that was added after automation.
What to See & Do
The island itself is not open to the public, but its dramatic silhouette dominates the seascape and can be enjoyed from several accessible points:
- From Achill Island – Many local boat operators run half‑day trips around Achill that pass close enough to photograph Blackrock’s tower against the Atlantic swells.
- From the Glosh Tower – This historic Martello tower on the Mullet Peninsula offers an unobstructed line‑of‑sight, especially striking at sunrise when the mist lifts.
- From the cliffs near Belmullet – Walking the coastal paths around Blacksod Bay provides distant but rewarding views of the white beacon on the horizon.
- Aerial perspectives – Chartered helicopter flights, arranged through Irish Lights or local adventure companies, give a rare bird’s‑eye view of the tower perched on the jagged rock.
- From Clare Island – The island’s highest points, such as the area around Clare Island Abbey, also frame Blackrock Island on the western seascape.
Wildlife & Conservation
The waters surrounding Blackrock Island are part of a designated marine habitat supporting a range of pelagic species. The island itself is known to host breeding seabirds, and its status as a potential Special Protection Area (SPA) has been discussed by conservation groups (verification required).
Getting There
- Nearest town: Belmullet (≈ 10 km) – offers car parking, cafés and a harbour where boat tours depart.
- Parking: Public car parks are available at Belmullet Harbour and at the turn‑off for the Mullet Peninsula viewpoint. (Exact locations to be confirmed.)
- Public transport: Bus Éireann route 440 serves Belmullet; from there a taxi or local shuttle can reach the coastal viewpoints.
- Boat tours: Several operators in Belmullet and Blacksod run seasonal excursions that include a stop near Blackrock Island for photography. (Names and timetables need verification.)
- Helicopter access: Visits by helicopter are arranged only for maintenance crews; private charter flights are possible through Irish Lights liaison.
Practical Information
- Access: The island is off‑limits; visitors must remain on the mainland or on authorised boat tours.
- Best viewing times: Early morning in summer when the mist clears, and late afternoon in winter when the low sun accentuates the tower’s white façade.
- Photography tips: Use a telephoto lens to capture the lantern’s flash pattern; a polarising filter helps cut glare on the sea.
- Weather: The Atlantic can be unpredictable; check forecasts before heading out, especially for boat tours.
- Safety: Keep a safe distance from the water’s edge; the rocks are slippery and the sea can be rough.
Nearby Attractions
While you’re exploring the western Mayo coast, consider adding these sites to your itinerary:
- Clare Island Abbey – Ruins of a 12th‑century monastic settlement with stunning views of the Atlantic.
- Bartragh Island – Accessible at low tide, offering a quiet beach and bird‑watching opportunities.
- Ballycroy National Park – A short drive inland, renowned for its blanket bogs and walking trails.
- Glosh Tower – The historic Martello tower mentioned above, with interpretive panels about coastal defence.
Blackrock Island’s remote lighthouse stands as a testament to Irish engineering resilience and continues to guide mariners across the wild Atlantic, while offering a striking visual landmark for visitors on the Mayo coast.