Grassed over and unassuming, it measures roughly fifteen metres long, nearly nine metres wide, and just over a metre high, the kind of dimensions that suggest deliberate construction rather than natural accumulation. What makes its situation quietly telling is what now occupies its summit: an animal-pen, with two stone walls extending outward from it. The mound has, in other words, been put to work, absorbed into the practical rhythms of farming without any particular acknowledgement of what it might once have been.

The mound lies approximately 450 metres south-south-west of Teampall Mac Duagh, an early medieval church on Inis Mór associated with the saint Colmán Mac Duagh, who is thought to have lived in the late sixth and early seventh centuries. The proximity to that ecclesiastical site raises questions without answering them. Mounds of this kind, built from earth and stone, appear across Ireland in a range of contexts, from burial monuments to the foundations of earlier structures, and without excavation it is rarely possible to say with confidence what lies beneath the grass. The limestone terrace setting is characteristic of this part of the Aran Islands, where the thin soil sits directly over karst bedrock and every feature in the landscape tends to endure simply because there is nowhere for it to go.