But their horseshoe shape, open end facing the water, gives them away as a fulacht fia, a type of Bronze Age cooking site found in large numbers across Ireland and Britain. The working principle was straightforward: water was heated in a trough by dropping fire-cracked stones into it, and the discarded burnt stone accumulated around the trough over time, forming the characteristic mound. At this particular site, however, no burnt stone is visible at the surface, which makes it quietly unusual among its type.

The monument sits on an east-facing slope at the outflow of a small marshy basin, roughly eight metres from the stream bank. It measures about 7.8 metres east-northeast to west-southwest and 6.5 metres in the perpendicular axis, rising to a maximum height of around 0.75 metres on its eastern side. The two contiguous, roughly oval mounds that form the horseshoe are close in size, though the eastern one is marginally larger. Stones protrude from the grassy surfaces along the southern flanks of both mounds, and at the southern tip of the western mound stands a tapered orthostatic boulder 0.7 metres high. A second, more block-like boulder just to its north-northwest may together with the first have formed part of a revetment, that is, a retaining structure to shore up the trough edge. Between the two mounds, in what would have been the trough area, a small stony patch roughly a metre across lies mostly buried under moss. What makes the setting still more interesting is that a second fulacht fia lies directly across the stream, only about twenty metres away on the southern bank, and an enclosure sits just to the north-northwest, its southern edge within four metres of the mound centre. Whether the proximity of these three features reflects contemporaneous activity or simply a landscape that proved attractive across different periods is not known, but the clustering is striking.