A fulacht fia is a prehistoric cooking site, typically Bronze Age in origin, consisting of a trough, a hearth, and a mound of heat-shattered stones. The method is straightforward enough: stones were heated in a fire and then dropped into a water-filled trough to bring it to the boil, shattering in the process. Over repeated use, the discarded cracked stones accumulated into a characteristic horseshoe-shaped mound. These sites are extraordinarily common across Ireland, and yet most remain invisible at ground level, known only when agricultural activity like deep ploughing disturbs the buried layer beneath. At Bannagh, it was exactly this kind of disturbance that revealed the site, the dark spread of burnt material appearing in the turned earth as local people noted what the field was giving up.