This is a fulacht fia, a type of prehistoric cooking site found in great numbers across Ireland, typically Bronze Age in origin. The mound itself is modest, roughly triangular, with sides measuring ten metres, five metres, and five metres, and rising only half a metre above the surrounding ground. What makes these sites legible is precisely those two materials: blackened earth and fire-cracked stones, the residue of a process repeated over many generations.

The working principle of a fulacht fia was straightforward. A trough, usually dug into waterlogged ground, was filled with water. Stones were heated in a nearby fire and dropped into the trough until the water boiled, at which point meat could be cooked. The cracked, heat-stressed stones were then discarded to the side, accumulating over time into the horseshoe or, as here, triangular mounds that survive today. The proximity of this example to both a bog and a well is entirely consistent with what archaeologists observe at fulacht fia sites generally, since a reliable water source was essential to the whole operation. Whether the well here is ancient or later is not recorded, but the pairing of mound, boggy ground, and water is a familiar signature of these sites across the Irish landscape.