These sites, found in their thousands across Ireland, are associated with Bronze Age cooking or industrial activity. The typical arrangement involves a trough, usually timber-lined or stone-lined and sunk into the ground, filled with water, which was then heated by dropping fire-cracked stones into it. The discarded, shattered stones accumulated over time into the characteristic horseshoe-shaped mound that survives today. They tend to appear in low-lying, wet ground, and Levallinree, like many Mayo townlands, would offer no shortage of that.

The fulacht fia tradition spans roughly from 1500 to 500 BC, though some sites fall outside that range, and debate continues about what exactly was being cooked or processed at them. Deer, pig, and other animals are the most commonly proposed candidates for the cooking theory, while others have suggested uses ranging from textile preparation to bathing. What is consistent is the sheer labour involved: heating enough stone to bring a large trough to a useful temperature would have required sustained effort and a reliable fuel source, suggesting these were not casual or improvised features of the landscape but organised, repeated activities carried out by communities who returned to the same spot across generations.