This is drystone construction in its most elemental form: stones laid carefully against one another, relying on their own weight and the skill of whoever placed them to hold their shape across the centuries. The hut measures roughly 3.4 metres by 2.1 metres, with an entrance facing west, and its walls are about 0.8 metres thick. It is modest, almost self-effacing, which is perhaps why it is so easy to overlook.

Sitting about a metre to the south-west of the hut is a second structure, subrectangular in shape and formed from boulders and upright slabs. This is interpreted as a possible animal pen, and taken together the two features suggest a small seasonal or temporary settlement, the kind of place where someone, or a family, might have sheltered alongside their livestock during the summer grazing season. This practice, known in Ireland as booley farming or transhumance, involved moving animals to higher ground in summer and building simple shelters near the grazing. The pairing of a human shelter and an enclosure for animals is a recurring pattern in such sites across Kerry and the wider west of Ireland. The Bunbinnia hut sits about fifty metres south-east of a related site, pointing to a landscape that was, at some point, meaningfully occupied rather than merely passed through.