Its internal dimensions, roughly 4.1 metres by 3.6 metres, make it compact even by the standards of early Irish vernacular building, and the northeast section of its wall retains faint traces of corbelling, a technique in which stones are laid in overlapping courses that gradually lean inward to form a roof, no mortar required. That the wall reaches only 0.6 metres at its tallest point gives some sense of how much has been lost, yet what remains is enough to read the original construction: upright slabs set along both faces at the base, a gap at the southeast that almost certainly marks where the entrance once stood.

The hut sits inside an enclosure wall to its northwest, suggesting it formed part of a wider settled complex rather than existing as an isolated structure. This kind of arrangement, a small dwelling contained within a defined boundary, is consistent with early medieval land use patterns across the south and west of Ireland, where farming communities organised space carefully against the demands of the landscape. The Iveragh Peninsula, the broad finger of land that carries the Ring of Kerry, is unusually dense with such survivals, its relative remoteness having helped preserve features that elsewhere were long ago cleared or built over. The site at An Lóthar represents a modest but legible fragment of that layered record.