A clochaun is a dry-stone corbelled structure, typically beehive-shaped and associated with early medieval monastic or agricultural settlement, but this one departs from the familiar form. Rectangular on the inside rather than round, and irregular on the outside, it sits quietly at the north-east of the enclosure as though it was an afterthought, or perhaps an extremely deliberate piece of engineering that simply looks like one.

The construction technique is precise in a low-key way. The upper three courses of the walls are corbelled inwards, meaning each layer of stone projects slightly over the one below it, reducing the span until large flat slabs can close the roof entirely. The chamber ceiling sits just 1.4 metres above the floor, and the whole interior measures no more than 2.24 metres across at its widest point. The doorway, set into the west end of the south wall, is lintelled and stands 1.25 metres high. The valley setting is a specific one: Ballysitteragh mountain rises to the north, Knocknahoran to the south, and the site looks out from the south-east side of the valley that runs between them. The description of the monument was drawn from J. Cuppage's 1986 archaeological survey of the Dingle Peninsula, published under the title Corca Dhuibhne, a comprehensive regional survey that documented the extraordinary concentration of early field monuments across this part of Kerry.