It looks, to the casual eye, like little more than a patch of scorched earth. What it actually represents is one of the most common yet least understood monument types in the Irish archaeological landscape: a burnt mound, or fulacht fiadh, the remnant of a prehistoric cooking or industrial site where stones were heated in fire and then plunged into a water-filled trough to bring it rapidly to the boil.

Burnt mounds of this kind date mostly to the Bronze Age, roughly 1500 to 500 BC, though examples span a wide chronological range. The method was efficient: fire-cracked stones, useless for reheating once shattered, were discarded to the side of the trough, accumulating over repeated use into the low, often horseshoe-shaped spreads that survive today. At Ballyvolane, the deposit is oval rather than the classic crescent form, and the charcoal-enriched soil points to sustained, repeated burning on or near the spot. Intriguingly, a second possible burnt mound sits approximately 160 metres to the north-east, raising the question of whether this was a locale returned to across generations, or whether two separate episodes of activity happened to cluster in the same part of the landscape.