It is a fulacht fia, a type of prehistoric cooking site found in great numbers across Ireland, typically identified by the distinctive horseshoe-shaped mounds of fire-cracked stone and charcoal that accumulate around a trough. This particular example measures roughly seven metres across in both directions and stands only about thirty centimetres high, with an opening two metres wide facing north-east.

What makes the Tombrickane site quietly compelling is its context. It does not stand alone. A larger fulacht fia lies just four metres to the north, and the two together form part of a cluster of three such monuments in close proximity. The grouping suggests this stretch of marginal land, boggy to the north and better-drained to the south, was a place of repeated, organised activity during prehistory, most likely Bronze Age in date. Fulachtaí fia are generally thought to have functioned as outdoor cooking sites, where water was heated by dropping fire-heated stones into a wooden or stone trough until it boiled, though some archaeologists have proposed additional uses including textile processing or bathing. The specific arrangement here, with monuments clearly aware of one another across a short distance, points to a landscape that was understood and used deliberately rather than casually.