It is a fulacht fia, a type of prehistoric cooking site found in remarkable numbers across Ireland, typically identified by a horseshoe-shaped mound of fire-cracked stone and charcoal left behind after repeated use. The presence of burnt material spread across the site is consistent with the standard interpretation: stones were heated in a fire, dropped into a water-filled trough to bring it to the boil, and used to cook meat, possibly also for bathing or industrial processes. What makes this particular spot quietly interesting is not just what it is, but where it sits. Roughly a hundred metres to the north-west lies another fulacht fia, the two sites close enough to suggest this stretch of ground was repeatedly returned to, generation after generation, during the Bronze Age.

The mound was recorded on the Ordnance Survey six-inch map of 1938, noted there in its semicircular form, which is how many fulachtaí fia survive: not as dramatic earthworks but as modest humps in farmland, often only legible when mapped or seen from an angle in low winter light. Fulachtaí fia are among the most common prehistoric monument types in Ireland, with tens of thousands identified, yet individual examples rarely attract much attention. The clustering of two within close proximity at Carrigathou hints at sustained activity in the area, though without excavation it is impossible to say whether they were in use at the same time or represent separate episodes of occupation across a wider span of prehistory.