There is no mound, no hollow, no surface feature of any kind to suggest what was found here, which makes the site an instructive case of how much Irish prehistory remains legible only through accident.

A fulacht fia is a type of burnt mound site found widely across Ireland and Britain, typically consisting of a horseshoe-shaped heap of heat-shattered stone accumulated around a trough that would have been filled with water and heated by dropping fire-cracked rocks into it. They are generally associated with the Bronze Age, though their precise purpose has been debated, with cooking, bathing, and industrial processes all proposed. The Carrickbeg example came to light not through targeted archaeological investigation but through the construction of a gas pipeline in 1986, when excavation work encountered what was identified as a possible fulacht fia. The find was recorded by M. Gowen and published in 1988. Without that infrastructure project cutting through the ridge, the site would almost certainly have remained entirely unknown.