The enclosure itself, a bounded area defined by stone walling, closes off the north-western sector of the site, while a rubble wall about a metre wide and sixty centimetres high forms the remaining boundary. Near the centre of this enclosure sits a cairn, a deliberate pile of stones whose original purpose is now a matter of quiet speculation.

This hut site is not an isolated find. It forms part of a wider complex identified on the hill by Diarmuid O'Keeffe in 1996, comprising multiple enclosures, several other hut sites, clearance cairns, and a possible ring-cairn. Clearance cairns are exactly what they sound like: stones gathered and piled to clear ground, often for cultivation or grazing, and their presence here suggests the hillside was once managed land rather than simply passed through. A ring-cairn is a roughly circular arrangement of stones, generally understood to have had a ritual or funerary function in prehistory, though the example at Knocknagearagh is recorded only as a possibility. Together, these features paint a picture of sustained upland activity, the kind that leaves its marks in stone long after any other trace has gone. The river valley below the slope would have provided water and lower ground for settlement, while the hill itself offered whatever its occupants needed from higher terrain, grazing, outlook, or something harder to name.