Only its northern edge has ever been seen, and that almost by accident, exposed during groundwork for the Lough Mask Regional Water Supply Scheme between 2001 and 2002. What came to light was a thin spread of burnt sandstone and charcoal, roughly 2.2 metres by 2.6 metres and no more than eight centimetres deep, lying under a layer of peat and resting directly on marl, the pale calcium-rich sediment typical of post-glacial lakeland soils in the west of Ireland.

The feature is interpreted as the northern limit of a fulacht fia, the Irish term for a type of prehistoric burnt mound found in great numbers across Ireland, typically dating to the Bronze Age. The usual explanation for these sites is communal cooking: stones were heated in a fire, then dropped into a water-filled trough to bring it to a boil, and the cracked, heat-shattered fragments were raked aside to form the characteristic mound of scorched stone and dark organic material. The main body of this particular example almost certainly extends to the south-east, still sealed under the road that borders the site. The surrounding land is wet and marginal, sloping northward, exactly the kind of low-lying, waterlogged ground where fulachta fiadh are most commonly encountered throughout Connacht. The monument was recorded under licence reference 01E0314 and discussed by Guinan in 2015.