It is, in fact, a fulacht fia, a type of prehistoric cooking site found in great numbers across Ireland and Britain. The mound itself measures about 12.8 metres north to south and 6.4 metres east to west, rising only a quarter of a metre above the surrounding land. That modest height is typical of the form: what you are seeing is essentially a horseshoe-shaped heap of burnt and fire-cracked stone, the accumulated debris of repeated use over what may have been centuries.

The working theory for most fulachtaí fia is that they functioned as outdoor cooking places, probably during the Bronze Age, though some sites have produced dates ranging into the Iron Age. Water from a nearby source, such as the stream just metres away here, would have been channelled or carried into a timber or stone-lined trough, then brought to the boil by dropping in stones heated in a nearby fire. Once cracked and spent, those stones were raked out and discarded, building up the distinctive mound over time. The proximity to running water was not incidental; it was fundamental to the whole process. What makes this particular site a little more interesting is that a second fulacht fia lies roughly 120 metres to the north-north-west. Paired or clustered sites like this are not unheard of, and their relationship, whether they were used simultaneously, seasonally, or by different groups across different periods, remains an open question.