This is the defining oddity of the structure: whoever built it folded the landscape itself into the architecture, using a natural rock face as one side of what was once a sheltered dwelling or working space.

What survives is modest but legible. The curved portion of the wall is built in drystone, a technique requiring no mortar, with the lower courses laid horizontally and still standing to roughly half a metre in height, at a thickness of around 45 centimetres. The straight northern side, some 3.1 metres long, is simply the vertical cliff face. The interior measures 1.65 metres north to south, and the southern end has been deliberately raised by about 20 centimetres to level the floor against the natural slope of the hillside, a small but telling detail that speaks to practical intent. A gap on the western side may mark where an entrance once stood. The structure is partially obscured by collapsed rubble, so the full original form requires some imagination to reconstruct. Drystone hut sites of this kind are found across upland areas of Ireland and are notoriously difficult to date without excavation; they could belong to almost any period from prehistory through to the post-medieval era, built by herders, travellers, or labourers making temporary use of high ground.