Roughly half a metre long, with jagged, irregular edges, it carries a Latin cross carved into its face, the shaft tapering to a point and, at the head of the cross, a circular hole bored clean through the thickness of the stone. That perforation is the puzzle. It is not decorative in any obvious sense, and it is not explained by the form alone.

The slab belongs to a graveyard associated with an early monastic foundation, the kind of site common along Ireland's Atlantic edge, where small religious communities settled on islands from roughly the sixth century onwards. Cross-inscribed slabs, a category of early medieval monument found widely across Ireland, were typically used to mark burials or to sanctify a place, with the carved cross serving both as a devotional object and a territorial claim for consecrated ground. This particular example was recorded by Higgins in 1987, who catalogued it among the early Christian monuments of the region. The stone itself, gneiss or schist, is local in character, the sort of raw material a community would have shaped with whatever tools were to hand, which perhaps accounts for the rough, uneven perimeter. The pierced hole at the cross-head has a parallel in other Irish examples, sometimes interpreted as allowing a cord or finger to pass through during devotional use, though no single explanation has settled the question.