It stands just over a metre high and is heavily overgrown, easy to walk past without a second glance. But that unremarkable hump in the ground is almost certainly the remains of a fulacht fia, a type of prehistoric cooking site found in considerable numbers across Ireland, particularly in wet or marginal land near water.

Fulachtaí fia, the plural form, typically date from the Bronze Age, though some examples span a wider range. The name is an old Irish term sometimes translated loosely as "cooking pit of the deer," and the basic technology involved was straightforward: a trough, usually timber-lined or stone-lined, was filled with water, and stones were heated in a nearby fire before being dropped in to bring the water to a boil. Meat could then be cooked in the heated trough. The cracked, heat-shattered stones, rendered useless after a single use, were discarded to one side, and over centuries of repeated use those discards accumulated into the horseshoe-shaped or oval mounds that archaeologists recognise today. The Curragh example fits this pattern closely, sitting as it does in marshy ground beside a stream, exactly the kind of damp, water-adjacent location where fulachtaí fia tend to cluster.