It is easy to overlook, and that is rather the point. The slab carries a Latin cross carved in low relief on each of its faces, the arms slightly splayed, the horizontal members set at a gentle angle, as if the carver preferred suggestion over statement. Cross-slabs of this kind are early medieval grave markers or devotional stones, incised with simple crosses to sanctify a place or commemorate the dead, and they turn up across Ireland wherever early Christian communities settled and buried their own.

The stone was catalogued by the scholar Ó hÉailidhe in 1967, who recorded it as slab 41 and noted that it was then lying loose within the enclosure. At some point after that, it was set into the upper surface of an oval stone structure, stepped on its interior, which the Office of Public Works had constructed in 1946 to house and display the remarkable collection of early Christian carved stones gathered at St. Berrihert's Kyle. That intervention, well-intentioned as it was, may have placed the slab inverted, so that what a visitor sees projecting from the wall is, in all likelihood, the reverse face. The cross on that reverse is rendered in a relief of only six millimetres, barely proud of the surface, easy to miss in flat light.