It is not the kind of feature that announces itself: oval in plan, roughly eighteen metres along its longer axis and two metres high, sloping gently from north to south on a south-west-facing hillside in the island's southern half. What makes it quietly interesting is what the surface conceals and hints at. A central hollow runs along the same north-east to south-west alignment as the mound itself, and along the inner eastern face there are traces of stone revetting, the practice of lining an earthen structure with coursed stonework to stabilise or retain it. A possible field wall appears to extend away from the mound toward the north-east, suggesting the feature was not entirely isolated but may have been integrated into a wider pattern of land use.

The mound came to attention during fieldwork carried out as part of the AranLIFE Farming Project, which ran between 2014 and 2018 and was concerned with the traditional agricultural landscape of the Aran Islands. That context matters. Inis Oírr, like its sister islands, is layered with archaeology that ranges from prehistoric through early medieval, much of it obscured by the limestone pavement and thin soils that characterise the terrain. The stone revetting visible here places the structure in a broadly constructional tradition, though without excavation its date and precise function remain open questions. The possible field wall attachment raises the prospect that the mound formed part of an enclosure or boundary system, though again this is inference from surface observation rather than established fact.