Oileán Dhiarmada is a small tidal island only about 100 metres in diameter with a small grey bungalow and a static caravan on it. It is located a mile to the north west of the small town of Burtonport off the west coast of The Rosses area of County Donegal. It is accessible at low tide across 200 metres of solid sandy mud. I followed the car tracks, which led to the neighbouring bigger island of Rinn Raithní, as I am always a bit dubious about how soft mud is. There was no one at home in the static caravan or the bungalow. The island is covered in rough grass with patches of heather.