What makes it quietly interesting is the hollow reportedly at its centre, a detail passed down through local knowledge rather than recovered by excavation. That hollow, combined with the dark earth and scattered brittle stones visible beneath the humic layer, points toward a possible fulacht fiadh, though the identification remains uncertain.

A fulacht fiadh is a type of prehistoric cooking site, typically consisting of a horseshoe-shaped or circular mound of fire-cracked stones built up beside a trough or pit, usually in low-lying or waterlogged ground. The stones were heated in a fire and then dropped into the water-filled trough to bring it to boiling point, a method used widely across Ireland from the Bronze Age onward. The characteristic dark, crumbly soil found at such sites comes from the repeated burning and discarding of those heat-shattered stones over many uses. The location at Beenreagh fits the pattern well enough: marshy ground is precisely where these sites tend to appear, since a reliable water source was essential to the process. The circular form and the central hollow, if confirmed, would align with what surveyors have recorded at comparable sites elsewhere in Cork and across the country.