This particular example in the townland of Ballyhoolahan measures roughly 27.7 metres on its northeast to southwest axis and nearly 45 metres on the northwest to southeast, making it a substantial survivor. A field fence cuts across it, running northeast to southwest, and the fence itself contains burnt material, suggesting the boundary was built using whatever was to hand, including the ancient debris underfoot. The mound stands about 0.25 metres high on the western side of the fence and is lower to the east.

A fulacht fia, sometimes called a burnt mound, is among the most common prehistoric monuments in Ireland. The general interpretation is that they functioned as cooking sites, where stones were heated in a fire and then dropped into a water-filled trough to bring it to boiling point. The crescent or horseshoe-shaped mounds that result are the accumulated broken and fire-cracked stone discarded after each use. What makes Ballyhoolahan particularly striking is the sheer concentration of such sites in this single townland. A researcher named Bowman recorded nineteen fulachta fiadh here as early as 1934, suggesting this area saw sustained, repeated prehistoric activity over a considerable period. A second example lies only about 30 metres to the east of this mound, close enough that the two sites may represent different episodes of use within the same general locale, or perhaps overlapping traditions of activity across many generations.