The wall that once defined this hut site measures roughly 5.4 metres north to south and 4.2 metres east to west, making it a tight, intimate space by any reckoning. What makes it quietly odd is the way the builders worked with the mountain rather than against it: at the southern end, the top of a natural outcropping rock was simply incorporated into the wall itself, the geology of the hillside pressed into service as ready-made building material.

The structure survives as a low and indistinct ring of closely set stones, most of them only partially visible where they protrude through the shallow peat cover. On the south-south-west to south-east arc, the stones are modest in height, averaging around 0.2 metres above ground. On the south-east to south-south-west return, larger stones survive to approximately 0.5 metres. Hut sites of this kind, generally understood as the remains of simple circular or oval dwellings built from dry-laid stone, appear across the upland landscapes of Munster, though assigning a precise date without excavation is rarely straightforward; they could belong to the Bronze Age, the early medieval period, or to more recent centuries of seasonal hill farming. The Ardgroom Outward site sits within a landscape that already holds other prehistoric remains, and its position on a north-facing slope, in rough pasture scattered with surface stones and rock outcrops, is typical of the marginal ground where such structures tend to survive.