It rises no more than half a metre from the ground, measures roughly 2.3 metres across internally, and opens through a 1.2-metre entrance on its southern side. Scattered along the inner face of the mound, fragments of heat-shattered stone are still visible, the physical signature of a fulacht fia.

A fulacht fia is a type of prehistoric cooking or processing site found in large numbers across Ireland, typically consisting of a trough, a nearby water source, and a mound of cracked, fire-damaged stones. The standard method involved heating stones in a fire and dropping them into a water-filled trough until the water boiled, the discarded stones accumulating over time into the characteristic mound. Sites of this kind tend to date to the Bronze Age, broadly speaking from around 1500 BCE onward, though the practice may have continued in some form into the early medieval period. Thousands of fulachta fiadh have been identified across the country, yet individual examples in upland settings like this one, overlooking a tidal bay with long views westward, carry a quiet particularity. The elevation and the view suggest a landscape in use rather than empty, worked and inhabited by people whose traces have largely dissolved into the hillside.