These sites, found in their thousands across Ireland, are typically characterised by a mound of fire-cracked stone and charcoal-blackened soil, the accumulated debris of repeated heating episodes carried out over centuries during the Bronze Age. The working theory, though not without its sceptics, is that stones were heated in a fire and then dropped into a water-filled trough to bring the water to a boil, for cooking, bathing, textile processing, or some combination of purposes that probably varied by community and season.

The Cornaveigh site presents itself modestly: no visible earthwork mound, just a dark scatter of burnt material visible in ploughed ground. This is not unusual. Many fulachta fiadh, to use the Irish plural, have been reduced by centuries of farming to little more than a discolouration in the soil, their stone spreads gradually broken up and dispersed by the plough. The burnt and shattered stone that defines these sites is the result of thermal shock, what happens when intensely heated rock meets cold water repeatedly. Cork, with its wet lowland topography and abundance of suitable stone, has one of the densest concentrations of these sites anywhere in Ireland, and Cornaveigh sits within that broader pattern of prehistoric activity across the county.