This circular earthwork, measuring roughly 11 metres northwest to southeast and 10 metres northeast to southwest, rises about a metre from the marshy ground below. What makes it particularly intriguing is the U-shaped depression on its northeastern side, where four upright stones peek through the earth, marking what appears to be a stone-lined pit measuring 0.7 metres wide and at least a metre long.

This unassuming mound is likely a fulacht fiadh (plural: fulachtaí fia), one of Ireland's most common yet enigmatic archaeological features. These Bronze Age sites, found throughout the country, were essentially ancient cooking places where heated stones were used to boil water in wooden or stone-lined troughs. The telltale signs are all here; fire-cracked stones that crumble easily when disturbed by animals around the base, the characteristic horseshoe shape with its central trough, and the location near water on wet, marshy ground with good grazing land nearby on higher, drier stretches to the north and south.

About 15 metres to the southeast, a low heap of loose stones hints at another possible fulacht fiadh, suggesting this area saw repeated use for these mysterious cooking activities. While archaeologists still debate their exact purpose, whether for cooking game, brewing, or even as ancient saunas, these sites remain one of the most numerous monuments dotting the Irish landscape, with thousands recorded across the country. This particular example was documented in the Archaeological Survey of County Donegal in 1983, though it has likely stood here, slowly settling into the landscape, for over three thousand years.