The enclosure at Inchinagoum is D-shaped, with a straight side running roughly thirteen and a half metres along the northwest and a curved wall completing the form to give an interior measuring around five metres across. Much of the stonework has subsided into the boggy ground or lies scattered, particularly in the western interior where the ground slopes away toward the northwest. A gap of roughly eighty centimetres in the eastern wall is thought to mark the original entrance, though at this stage the whole structure has the appearance of a puzzle in the early stages of being swallowed.

Enclosures of this kind are a recurring feature of the Irish upland landscape, typically associated with early medieval settlement and farming activity, though precise dating without excavation is difficult. What makes this one quietly interesting is its relationship to a neighbouring hut site located about seventy metres to the northeast. A hut site, in this context, refers to the surface remains of a small dwelling, usually circular, built from stone or turf. The proximity of the two features suggests this was once part of a small, self-contained settlement unit, where people lived and kept animals on the rough hill pasture above the river valley. The bog that now makes the ground awkward to cross would have accumulated over centuries, gradually obscuring what was once a working, inhabited place.