The site is a fulacht fia, a type of ancient cooking or processing site found in enormous numbers across the Irish landscape, identified here by a spread of burnt and heat-fractured stone measuring fourteen metres in length and twelve metres in width. The characteristic dark, humped mound that most fulachtaí fiadh form over centuries of accumulated debris is so common in Irish fields that farmers long nicknamed them "burnt mounds", and their very ordinariness is part of what makes them interesting. This one at Bawnard is not a dramatic ruin but a quiet patch of discolouration in tillage ground, readable mainly through the material it left behind.

A fulacht fia typically consists of a trough, often timber-lined, into which water was poured and heated by dropping fire-cracked stones into it. The shattered stones were then raked out and discarded, building up the mound over repeated use. The exact purpose of these sites has been debated for decades; cooking is the most widely accepted explanation, though brewing, textile processing, and bathing have all been proposed. What is particularly notable at Bawnard is that a second fulacht fiadh lies roughly 150 metres to the south-west, suggesting that this part of Cork saw sustained or repeated activity during the Bronze Age. Such clustering is not unusual nationally, but it does give a sense of a landscape that was, at some point, genuinely busy with human activity rather than the empty rural ground it might appear today.