It is a fulacht fia, a type of prehistoric cooking site found in considerable numbers across Ireland, and its modest dimensions conceal a fairly precise geometry: horseshoe-shaped, roughly seven metres east to west and six point eight metres north to south, with an opening of two metres facing south. Just beyond that opening, a shallow depression in the ground may mark where the trough once sat.

Fulachtaí fia, the plural form, are among the most common archaeological monuments in Ireland, typically dating to the Bronze Age, though some examples have been found to span other periods. The basic principle involved heating stones in a fire and dropping them into a water-filled trough, bringing the water to a boil. The spent, shattered stones were piled to the sides over time, gradually building up the characteristic horseshoe shape that survives at this Kerry example. The mound here, standing around sixty-five centimetres at its highest point, represents that accumulated debris. Whether the trough itself was cut into the earth or lined with timber or stone is not recorded for this site, but the slight hollow to the south of the opening is a suggestive trace. The proximity to a watercourse is entirely typical; reliable access to water was a practical necessity for the process, and fulachtaí fia are very frequently found close to streams, rivers, or marshy ground.