The northern and south-south-eastern arc is formed by the mounded material of a fulacht fiadh, one of those enigmatic burnt-mound sites found across Ireland, typically interpreted as the debris of ancient cooking or industrial activity in which water was heated by dropping fire-cracked stones into a trough. The mound wraps roughly half the circuit before giving way to a slight earthen rise of about twenty centimetres, which in turn yields to a stone-faced scarp on the western side, standing perhaps forty centimetres high, before returning to the fulacht mound in the north. The whole thing measures roughly twenty-five metres north to south and twenty-six metres east to west.

What makes this enclosure quietly peculiar is its composite construction. Rather than being built from scratch as a single, purposeful boundary, it appears to have incorporated an already-existing fulacht fiadh mound as part of its fabric. Fulacht fiadh mounds are among the most common prehistoric monuments in Ireland, dating broadly to the Bronze Age, and the reuse of one as a ready-made earthwork suggests a practical opportunism, or perhaps a deliberate association with a place that already carried some significance. The break in the bank to the west, likely an original entrance, aligns with the stone-faced section of the boundary, hinting at a more formally constructed approach on that side. No further dating evidence or associated finds are recorded for this site.