They appear as low, horseshoe-shaped mounds, typically found near water, and represent the remains of ancient cooking sites. The method was straightforward: stones were heated in a fire, then dropped into a water-filled trough, bringing it rapidly to the boil. Over repeated use, the stones cracked and shattered, and the discarded fragments built up into the characteristic mound that survives today. The example at Monanaleen, in County Clare, is one such site, quietly occupying its corner of the landscape as it has done since the Bronze Age.

The fulacht fia as a monument type dates broadly from around 1500 BC, though some examples are earlier and others later. Clare is particularly rich in prehistoric archaeology, and the broader Monanaleen area sits within a county where these cooking sites have been recorded across boggy lowlands and drumlin edges alike. The precise circumstances of this particular monument, its dimensions, condition, and exact setting, are not currently available in the public record, which places it among a considerable number of Irish sites still awaiting fuller documentation. What is known is the type itself, and that knowledge alone says something: wherever a fulacht fia sits, people once gathered, fires were lit, and something was being prepared, most likely meat, though experiments have shown the same technology works just as well for brewing, hide-working, and other communal tasks.