Carved into its upper surface is a smooth circular hollow, worn into the stone by generations of use. This is a bullaun stone, a type of early medieval carved rock found at ecclesiastical sites across Ireland, in which the characteristic cup-shaped depression is thought to have served ritual or practical purposes, possibly the grinding of pigments or medicinal plants, or as a vessel for water used in blessing or healing rites.

The stone itself is modest in scale, roughly half a metre across and about a third of a metre thick, with the central depression measuring around twenty-seven centimetres in diameter and sixteen centimetres deep. These are careful, deliberate dimensions, not the result of casual weathering. The church it belongs to is described only as a possible church, which hints at the ambiguity that surrounds so many of these quietly layered sites in the west of Ireland, where ecclesiastical remains and folk memory often survive in fragmentary form, the written record thin and the physical evidence partially reclaimed by vegetation and decay.