It measures just over seven metres east to west and barely a quarter of a metre in height, but the surface gives the game away: heat-shattered stones and charcoal-darkened soil are visible where the turf has worn thin, the unmistakable traces of a fulacht fia.

A fulacht fia is a type of prehistoric cooking or industrial site found in very large numbers across Ireland, typically consisting of a horseshoe or crescent-shaped mound formed from the accumulated debris of repeated fire-cracking. The process involved heating stones in a fire and dropping them into a water-filled trough to bring it to the boil, shattering the stones in the process; over many uses, the discarded fragments built up into the distinctive mound shape. This example follows that form closely, its opening, roughly two metres wide, facing north. What makes its situation particularly striking is the company it keeps: a second fulacht fia and a burnt mound lie within roughly ten and twenty metres to the north-west, respectively. Three such sites clustered within a short distance of one another on the same mountain slope suggests sustained, repeated activity in this spot over what may have been a considerable period of prehistory, even if the precise dates and purposes remain unresolved.