No mound rises from the field, no stones break the surface, and nothing in the landscape signals that anything of consequence ever happened here. That is precisely what makes the discovery at this Cork site so quietly striking. When test excavation was carried out at the base of a south-facing slope, archaeologists uncovered a spread of fire-reddened and cracked stone sitting in charcoal-rich soil, the classic signature of a fulacht fiadh that had been ploughed flat over the centuries until all outward trace of it vanished entirely.

A fulacht fiadh is a type of prehistoric cooking or processing site found in considerable numbers across Ireland, typically consisting of a trough, a hearth, and a mound of heat-shattered stone. The stones would be heated in a fire and dropped into a water-filled trough to bring it rapidly to the boil. The cracked, discarded stones piled up over time into the characteristic horseshoe-shaped mound that survives at many such sites. At Coolduff, that mound is gone, but the burnt spread beneath where it once stood remained intact enough to be measured: roughly ten metres east to west, six metres north to south, and only about fifteen centimetres deep. That shallow depth, combined with the absence of any surface mound, points to repeated ploughing having gradually dispersed the upper material while leaving the scorched base layer undisturbed just below the soil.