The site consists of a low earthen ridge cutting across the western neck of the headland, roughly 22.5 metres long and less than half a metre high, combined with a small sub-rectangular stone-banked structure and, to the northeast of the ridge, a stone-filled depression about two metres by four. Local tradition holds that this depression was once a long shaft, though what it served, and when, has not been formally documented.

The broader landscape offers some clues. The enclosure sits to the east of what are identified as possible lead mines and of Pierce's Island, suggesting this stretch of the Kerry coast had some history of mineral extraction. About 90 metres further east lies a natural feature called Poultarrif, from the Irish Poll an Tairbh, meaning hole of the bull, a subcircular blowhole roughly 23 metres by 14 metres. Blowholes form where the sea gradually erodes a cave roof from below until it breaks through the surface. What makes Poultarrif more than a geological curiosity are the drill runs visible along its sides, the kind of marks left by quarrying or mining operations. The working theory is that this too was once a lead mine, exploited until the underlying blowhole action caused the workings to collapse, and that it may have been connected to the enclosure site nearby. The stone-filled depression within the enclosure, if it really was a shaft, would fit that picture rather neatly.