No mound, no hollow, no scorched earth visible at the surface; nothing to interrupt the ordinary sight of grazing pasture beside a stream. Its existence is known only because a plough turned up burnt material at some point, and someone thought to mention it.

A fulacht fia, in its typical form, is a horseshoe-shaped mound of fire-cracked stone and charcoal, the accumulated debris of repeated cycles of heating stones in a fire and dropping them into a water-filled trough to bring it to the boil. Thousands of these sites survive across Ireland, most dating from the Bronze Age, roughly 2000 to 500 BC, and they cluster reliably near water sources, which explains the stream immediately to the east here. The burnt material recovered at Kilnaglory fits that pattern, though whatever mound may once have existed has been entirely dispersed by centuries of cultivation. What remains is essentially a findspot, a location where the soil retains the chemical memory of repeated burning, even if the landscape itself gives nothing away.