A cashel is a type of early Irish stone ringfort, typically enclosing a farmstead or settlement, and this particular building occupies the perimeter of one rather than its interior, which is itself a quietly unusual arrangement. The structure is rectangular, measuring eight metres east to west and at least two and a half metres north to south, with rounded corners and walls built from stone laid in a double-faced technique, meaning two outer skins of stone with a core between them. The north wall survives to three courses and stands 0.8 metres high, still well enough preserved to show a doorway opening near its eastern end. Inside, a probable stone bench projects from the south wall, roughly two and a half metres long and a metre wide, the kind of built-in furniture that suggests the space was used for more than storage.

What makes the site stranger still is what lies immediately outside its western wall. A small looped drystone wall, only two metres in diameter, curves around what appears to be a collapsed chamber belonging to a souterrain. A souterrain is an underground stone-lined passage or chamber, commonly associated with early medieval settlements in Ireland, and typically used for storage, refuge, or both. This one seems to extend further westward beyond the collapsed point, its full extent difficult to determine. The relationship between the house and the souterrain is not fully understood, but the looped wall abutting the exterior suggests someone at some point was deliberately marking or managing access to the underground feature. Whether the house and the souterrain were in use simultaneously, or represent different phases of activity on the cashel's edge, the evidence does not say.