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Dún Briste: Mayo's Majestic Sea Stack

Discover Dún Briste: An iconic sea stack on Ireland's Wild Atlantic Way, rich in history, geology, and breathtaking coastal scenery.

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Dún Briste, meaning 'Broken Fort,' is a breathtaking sea stack off the coast of County Mayo, Ireland. Separated from the mainland in 1393 by a fierce storm, this 45-meter-high stack is a haven for seabirds and steeped in legend, offering stunning views and a glimpse into Ireland's geological past.

A brief summary to Dún Briste Sea Stack

Local tips

  • Wear appropriate footwear as the walk to the viewpoints can be muddy, especially after rain.
  • Be cautious near the cliff edges, especially on windy days, as there are no fences.
  • Visit the nearby Céide Fields, one of the oldest known field systems in the world, located a short drive from Downpatrick Head.
  • Bring binoculars for better viewing of the nesting seabirds on Dún Briste.
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Getting There

  • Driving

    Dún Briste is located at Downpatrick Head, approximately 6 km north of Ballycastle in County Mayo. From Ballycastle, follow the R314 north. The drive takes about 10 minutes. There is a well-marked car park at Downpatrick Head. From the car park, it's a 500m (10 minute) walk to the cliff edge overlooking Dún Briste. Parking is free.

  • Public Transport

    To reach Dún Briste via public transport, take a bus to Ballina. From Ballina, you can take Bus Éireann route 445 or 821 to Ballycastle. From Ballycastle, it is approximately 6km to Downpatrick Head. A taxi from Ballycastle to Downpatrick Head will cost approximately €15-€20. Alternatively, you can walk, which will take over an hour.

  • Walking

    From the Downpatrick Head car park, it is a short 500m (10 minute) walk to the viewpoints overlooking Dún Briste. The path is mostly grass and can be muddy, especially after wet weather. The clifftop is uneven and unguarded, so caution is advised.

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Discover more about Dún Briste Sea Stack

Dún Briste stands as a solitary sentinel against the crashing waves of the Atlantic Ocean at Downpatrick Head in County Mayo. This impressive sea stack, whose name translates to “Broken Fort” in Irish, was once connected to the mainland until a catastrophic storm in 1393 severed it, leaving a dramatic scar on the coastline. The event stranded inhabitants on top, who were later rescued using ship ropes. Geologically, Dún Briste's origins trace back approximately 350 million years to the Carboniferous period. The stack's composition of layered limestone, sandstone, and mudstone showcases the region's ancient environmental changes. Reaching a height of 45 meters (150 feet), Dún Briste provides a secure nesting site for various bird species, including Common and Greater Black-backed Gulls, Kittiwakes, Cormorants, and Puffins. Legends intertwine with the stack's history, one recounting how Saint Patrick, in his efforts to Christianize Ireland, struck the ground with his staff to separate the stack from the mainland, thus isolating a pagan chieftain named Crom Dubh who refused to convert. In 1980, a team of researchers landed on Dún Briste by helicopter, discovering remnants of stone buildings and a unique sheep run, suggesting medieval habitation. The team also found a broken quern stone. Today, Dún Briste is a highlight along the Wild Atlantic Way, drawing visitors to Downpatrick Head to witness its imposing presence and absorb the rich tapestry of history and natural beauty.

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