A fulacht fia, the plural being fulachtaí fia, is a type of Bronze Age cooking monument found in great numbers across Ireland, typically consisting of a horseshoe-shaped mound of fire-cracked stone accumulated beside a water trough into which heated rocks were dropped to boil water. Finding four of them clustered together in one basin is not especially common, and this particular example is the quieter, less imposing member of the group.

The mound sits roughly 31 metres south-west of its nearest neighbour in a flat but heavily boulder-strewn area along the northern edge of the basin. It is slightly lunate, or crescent-shaped, in plan, measuring about 10 metres along its longer axis and 7.2 metres across, with a maximum height of around half a metre on its south-western side. The opening faces south, as is typical of the form. Heat-fractured stone, the defining material of any fulacht fia and the physical residue of repeated thermal shock from heating and cooling, is visible along the summits of both arms and scattered around the base. What makes this particular mound worth pausing over is a low, oblong arrangement of slabs and small boulders on the south-eastern arm, measuring roughly 2.5 metres by 1.5 metres. None of these stones are actually set into the mound itself, which suggests they are not part of the original Bronze Age structure. The most plausible interpretation is that they represent the collapsed remains of a small turf-drying stack, a much later and entirely practical addition, someone at some point using the old mound as a convenient platform for drying cut peat. Two very different periods of land use, separated by millennia, have left their traces on the same low rise of stone.