The example at Ballyveelick in County Cork is one of thousands of these low, horseshoe-shaped mounds, typically found beside streams or in marshy ground, that represent the cooking sites of Bronze Age communities. The mounds themselves are the accumulated debris of repeated use: fire-cracked stones, discarded after being heated and plunged into water-filled troughs to bring the liquid to a boil. It is a method that sounds improbable until you consider how efficiently it works, and experimental archaeology has shown that a trough of water can be brought to a rolling boil within minutes using this technique.

The Ballyveelick site sits within a broader Cork landscape that is unusually dense with prehistoric activity, a reflection of both genuine ancient settlement patterns and the relatively thorough pace of field survey in the county. Fulachtaí fia are generally dated to the Bronze Age, broadly between 1500 and 500 BC, though some sites have returned earlier dates, and their precise function has been debated for decades. Cooking is the most widely accepted explanation, but proposals have ranged from textile processing and hide preparation to bathing and brewing. The burned and shattered stone that forms the mound is the monument's most durable element; the wooden trough, the posts, and any organic material associated with use have almost always long since disappeared.