Living 50 metres off the north Mayo coast at Downpatrick Head sits the 45 metre high flat topped sea stack Dún Briste (the Broken Fort). Interestingly, this is considered to be a relatively new sea stack as it was only separated of the mainland Ireland in 1393 when monster seas severed it from County Mayo in an overnight storm. The summit of the stack is approximately 50 metres long and 15 metres across the centre. This flattopped stack contains the remains of the buildings where people were living on the night of the great storm. In 1980 three scientists landed on the summit by helicopter and spent a couple of hours examining the remains of the buildings and plant life still surviving there. They discovered the remains of a building running across the centre of the headland with enough details left to say that both people and livestock lived together inside it.
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