A fulacht fia typically survives as a low, horseshoe-shaped mound of fire-cracked stone and charcoal-darkened earth, usually positioned near a water source. The prevailing interpretation is that they were ancient cooking sites, used during the Bronze Age by heating stones in a fire and then dropping them into a water-filled trough to bring it to the boil. Some researchers have suggested alternative uses, including brewing, hide-working, or bathing. The example at Levallinree in County Mayo is one such site, recorded but not yet widely documented in the public domain.

The broader class of monument to which this site belongs dates predominantly to the Bronze Age, roughly 2000 to 500 BC, though some examples have been shown through radiocarbon dating to fall outside that range. Mayo, with its extensive bogland and abundant watercourses, contains numerous examples. Boggy, low-lying ground tends to preserve the characteristic burnt mound material particularly well, which is part of why so many fulachtaí fia survive in the west of Ireland. The place name Levallinree itself likely contains elements of Irish origin, as is common with townland names across Connacht, though the precise etymology would require careful linguistic analysis to unpack.