This is a bullaun stone, one of a class of carved or naturally modified boulders found across Ireland, typically associated with early Christian sites or places of older, less easily categorised significance. The hollow, or basin, was used for purposes that remain a matter of scholarly debate, ranging from the grinding of grain or pigment to ritual uses involving water collected within the depression. Whatever its original function, this particular example now keeps company with the dead, situated within a children's burial ground known in Irish tradition as a cillín, a place set apart for the unbaptised and others who, for various reasons, could not be interred in consecrated ground.

The stone itself is modest in scale but not in material. It is composed of Old Red Sandstone conglomerate, a rock type that would have required some effort to source and work, measuring roughly 0.7 metres by 0.65 metres and standing 0.45 metres high. Its single basin is 0.45 metres in diameter and between 0.15 and 0.25 metres deep, a substantial hollow suggesting long use or deliberate carving, or both. The antiquarian Thomas Johnson Westropp noted the stone in 1917, recording it among the many early ecclesiastical and prehistoric remains he catalogued across Munster during a career that did much to bring such overlooked features to wider attention. The pairing of a bullaun with a cillín is not unique in Ireland, though it remains unexplained; it may speak to the long, layered sanctity of ground that communities kept returning to, generation after generation, even as the formal reasons for doing so shifted or were forgotten.