It measures roughly twelve metres by eight, and rises about eight-tenths of a metre at its highest point. These modest dimensions are fairly typical of a fulacht fia, a type of prehistoric cooking site found in enormous numbers across Ireland. The usual interpretation is that such mounds accumulated over repeated use: stones were heated in a fire, dropped into a water-filled trough to bring it to a boil, and the cracked, spent fragments were then raked aside, building up the characteristic horseshoe or kidney-shaped spread of burnt and shattered stone that survives today.

What makes this particular example quietly notable is not the mound itself but its company. Seventy metres to the north-north-west, in the same field, lies a second fulacht fia. Paired or clustered sites of this kind are not unheard of, but they are far from routine, and their proximity raises questions that are not easily answered: whether they were used simultaneously, whether one replaced the other, or whether the pairing reflects something about how this patch of marshy ground was organised during the Bronze Age. Walsh recorded the site in 1985, noting its kidney shape and dimensions, and the mound remains as he found it, sinking quietly into the marsh.