The one recorded at Darragh in County Clare is a single instance of a type that appears almost everywhere in Ireland, yet whose precise purpose has kept archaeologists arguing for generations. The term itself, sometimes translated loosely as "cooking place of the deer," refers to a horseshoe-shaped mound of burnt and shattered stone, typically found close to a water source, and usually dating to the Bronze Age.

The standard interpretation holds that a fulacht fia worked as an outdoor cooking facility. A trough, dug into the ground and sometimes lined with timber or stone to hold water, would be filled from a nearby stream or spring. Stones were heated in a fire, then dropped into the trough to bring the water to a boil, and meat was cooked in the heated water. The cracked, fire-shattered stones, now useless for reheating, were piled up at the edges of the trough over successive uses, forming the characteristic crescent mound that survives today. Some researchers have proposed alternative uses, including brewing, hide-working, or bathing, and the debate remains genuinely open. What is consistent is the association with water and with fire, and the evidence of sustained, repeated activity over time. The Darragh example sits within a county where Bronze Age activity is well attested, though the specific details of this particular site's dimensions, condition, and immediate landscape context are not presently available.