The shape is part of the signature: a broad crescent of fire-cracked material, roughly 30 metres from north to south and 18 metres east to west, with a 12-metre opening facing west. These dimensions put it at a substantial example of its type.

A fulacht fia is, at its most basic, a Bronze Age cooking site, though that description has become contested over the years. The typical arrangement involves a trough, usually timber-lined or stone-lined and sunk into the ground, which would be filled with water and heated by dropping fire-cracked stones into it. The stones, unable to withstand repeated thermal shock, would fracture and be discarded to the sides, building up over time into the characteristic mound. The horseshoe plan is a direct consequence of this process, the spent material accumulating around three sides of the working area. This particular site sits approximately 21 metres south of a feature recorded as An Cliadh Buidhe, a name that translates roughly from Irish as "the yellow ditch" or "the yellow fence", suggesting some kind of earthwork or boundary feature in the vicinity, though the exact relationship between the two is not recorded.