Slea Head is a promontory on the westernmost part of the Dingle Peninsula, in southwest County Kerry, Ireland. It can be reached by the R559 road, with the nearest villages being Ballyickeen and Coumeenoole. The headland itself, together with the larger part of Mount Eagle's southern slopes, is formed from steeply dipping beds of the pebbly sandstones and conglomerates of the Slea Head Formation, dating from the Devonian period and traditionally referred to as old red sandstone.