At Dromultan in County Kerry, one such site survives, a low crescent-shaped mound of fire-cracked stone that was already ancient when the first Christian missionaries arrived in Ireland.

A fulacht fia, sometimes translated loosely as a cooking place or deer roast, is thought to date broadly to the Bronze Age, roughly 1500 to 500 BC, though examples have been found from earlier and later periods. The typical arrangement involves a trough dug into the ground, often timber-lined, which would be filled with water. Stones were heated in a nearby fire, then dropped into the trough to bring the water to a boil. The shattered, heat-fractured stones were discarded to the side, and over repeated use they accumulated into the horseshoe-shaped mounds that archaeologists now recognise across the landscape. Thousands have been recorded in Ireland, particularly in low-lying or marshy ground where water was close to the surface. What exactly they were used for remains a matter of debate; cooking is the traditional explanation, but brewing, bathing, and textile preparation have all been proposed with reasonable evidence. The Dromultan example sits within this broader pattern, one node in a network of prehistoric activity that once made Kerry's landscape considerably busier than it might appear today.