This is thought to be a fulacht fia, a type of prehistoric cooking site found widely across Ireland, typically identified by a horseshoe-shaped mound of fire-cracked stone left over from repeated episodes of heating rocks and plunging them into a water trough. Here, though, the mound raises quiet questions. The angular stones concealed beneath a thin layer of sod show little or none of the characteristic heat fracturing or charcoal residue that one would normally expect. The location, beside a boggy basin where water would have been readily available, fits the pattern. The shape fits too. But the stones themselves do not quite speak the usual language.

The site sits just ten metres south-south-west of a megalithic tomb, the kind of chambered monument built in the Neolithic period, often associated with communal burial, and this proximity adds another layer of ambiguity. A second, fainter mound lies roughly five metres to the north-north-east, on the opposite side of a tumbled dry-stone wall. If the two features are related, and if the second represents the northern arm of the same fulacht fia, then the monument may actually overlie part of the tomb's cairn. Whether that reflects deliberate reuse of an older sacred site, simple coincidence, or a misidentification of one or both features is not yet clear. The whole arrangement sits immediately south of a right-angled junction in that collapsed wall, giving the area a palimpsest quality, different periods of human activity folded quietly on top of one another in a stretch of boggy Mayo ground.