Only sixty centimetres at its highest point above the surrounding terrain, this grass-covered mound measures roughly seven and a half metres in one direction and ten in the other, oriented along a northwest-to-southeast and southwest-to-northeast axis. Most of it is sod-covered, blending into the landscape so thoroughly that it might go unnoticed altogether, were it not for a line of stones visible along its northwestern side, hinting at some underlying structure beneath the turf.

Islands like Inis Mhic Aoibhleáin, scattered along the Kerry coastline, tend to accumulate centuries of use within a small area, and low mounds of this kind can represent a wide range of origins, from early medieval burial activity to the collapsed remains of a field monument, a building platform, or a domestic structure long since abandoned. Without excavation, the function of this particular mound remains genuinely open. The exposed stonework on its northwestern edge is the only material detail that distinguishes it clearly from a natural rise, and that detail matters. It suggests deliberate construction or at least deliberate arrangement, at some point in the island's history that the surface alone cannot resolve.