It is a fulacht fia, a type of prehistoric cooking site found in great numbers across Ireland, typically consisting of a trough dug near a water source, a hearth for heating stones, and a mound of cracked, fire-shattered rock that accumulated as those stones were discarded after use. What makes this one quietly peculiar is what occupies its opening: a stone-lined holy well, tucked into the eight-metre gap where the horseshoe faces north-west, as though one era of ritual use simply folded itself into another.

The mound itself is substantial, measuring roughly 30.5 metres on its north-east to south-west axis and 24.5 metres across, rising to about 0.8 metres above the surrounding ground. That height is modest but legible, the characteristic dark, crumbly material of burnt and waterlogged stone giving it a slightly different texture from the pasture around it. The holy well, small and carefully constructed at 1.1 metres by 0.6 metres, sits precisely within the opening of the prehistoric mound. Whether that placement was deliberate or incidental is the kind of question that tends not to have a clean answer, but the coincidence of a water-associated prehistoric monument and a water-associated early Christian one occupying the same point in the landscape is the sort of detail that rewards a second look.