Ardmore is located adjacent to the hamlet of Fahy at the south west end of the Sky Road Peninsula, which lies to the west of the town of Clifden in County Galway. It is shown on the Ordnance Survey map as being permanently linked to the mainland. However it is only linked by a rocky tombolo, which looked as though it would probably only be covered at very high spring tides or during storm conditions. The island is 800 metres from east to west and 500 metres from north to south at its widest point. The highest point is 38 metres above sea level. The island, which is covered in grass looks as though it might sometimes be used for grazing livestock but there was no sign of any animals when I visited on a sunny evening in May 2017.