On its vertical western face, someone at some point in the early medieval period took a tool to the stone and carved with considerable precision: an equal-armed cross enclosed within two concentric circles, the whole composition no more than forty centimetres across. It is a quiet, almost miniature piece of work on a very large and immovable rock.

The carving is executed in incised grooves, the kind made by repeated scoring rather than single deep cuts. The cross arms and shaft extend outward to meet the edge of the innermost circle, creating a wheel-cross form, and between each of the four arms there is a curved incised arc that defines the quadrant space. At the centre of each of those quadrants there was once a small dimple, now barely visible. Cross-in-circle designs of this type are associated with early Christian activity in Ireland, often appearing on stones near monastic enclosures or burial grounds, and the local tradition attached to this particular rock fits that context well. The stone is known in Irish as Lia-na-manach, meaning Stone of the monks. The enclosure in which it sits is itself circular, a form commonly associated with early ecclesiastical settlements, and the whole complex is set within the older burial ground that bears the name League Cemetery. Whether the enclosure predates the carving, or the two features belong to the same period of use, is not recorded, but their proximity suggests a long continuity of significance at this spot.