It is a fulacht fia, a type of prehistoric cooking site found in their hundreds across Ireland, typically Bronze Age in date. The usual interpretation is that water was boiled in a trough by dropping heated stones into it, and the discarded burnt stones accumulated over time into the characteristic horseshoe-shaped mound that survives at so many sites. This one is a particularly substantial example.

The mound measures roughly 18.5 metres on its north-east to south-west axis and 16.5 metres from north-west to south-east, rising to a height of 3.1 metres at its eastern apex. The opening of the horseshoe, about 4.5 metres across and estimated at around 8 metres deep, faces north-west. The burnt mound material is exposed in several places across the surface, which is fairly typical of upland sites where erosion and grazing have worn away any turf cover. To the north and west, a network of relict field boundaries survives in the same rough ground, traces of an agricultural landscape that presumably postdates or was contemporary with whoever used this site, though their precise relationship to the fulacht fia is not recorded.