It is a fulacht fia, one of thousands of such sites scattered across the Irish landscape, and one of the more understated puzzles in Irish prehistoric archaeology. The mound measures roughly ten metres along its northeast to southwest axis and six metres across, rising only about forty centimetres above the surrounding ground. Its opening, around two metres wide, faces southeast. That horseshoe shape is characteristic of the type, and it is what remains after repeated episodes of heating stones, plunging them into water-filled troughs, and discarding the cracked, fire-shattered fragments into a growing heap around the trough's edge.

Fulachtaí fia, the plural form, are generally dated to the Bronze Age, though some sites have produced evidence stretching into the Iron Age. The standard interpretation is that they functioned as cooking places, where meat could be boiled efficiently using the hot-stone method, though brewing, hide-working, and bathing have all been proposed as alternative or additional uses. The proximity of this example to the Awbeg River makes practical sense: a reliable water source would have been essential for filling and refilling the trough. The Awbeg, a tributary of the Blackwater, winds through a landscape that still holds considerable bogland, and the waterlogged conditions that make such terrain difficult for farming are precisely what have preserved these fragile earthworks for several thousand years.