It is easy to mistake for nothing more than a natural rise in the ground, but its flat top and distinctive D-shaped outline betray something deliberate. This is a fulacht fia, a type of prehistoric cooking site found in great numbers across Ireland, and one of the more understated remnants of Bronze Age life in the landscape.

A fulacht fia typically consisted of a trough, often timber-lined or cut into the earth, which was filled with water and heated by dropping fire-scorched stones into it. The fractured, heat-shattered stones were then piled to the side over repeated use, building up the horseshoe or oval-shaped mound that survives today. At Cahersherkin, that mound measures roughly 13.6 metres north to south and 10.3 metres east to west at its base, tapering slightly toward a flat top some 10.1 metres by 7.2 metres, and it slopes gently toward the south-west. The site was recorded by MacMahon in 1991, and while the surrounding area has long since shifted to rough pasture, the mound itself remains grass-covered and largely intact in its shallow natural basin.