On each of its two faces, an outlined Latin cross has been carved with open ends at its terminals, the same motif repeated front and back as though the stone itself needed to carry its meaning in every direction. At roughly 38 centimetres long and only 8 centimetres thick, it is easy to overlook, yet it has survived in this place long enough to be catalogued, measured, and given a designation, 42A/42B, that hints at how many such fragments surround it.

The slab sits within St. Berrihert's Kyle, an early ecclesiastical enclosure in the Glen of Aherlow. A kyle, in this context, refers to a small sacred precinct associated with an early Irish saint, and St. Berrihert is thought to have been an early medieval holy figure connected with this area of Tipperary. The oval stone enclosure that now houses the cross-slab and a collection of similar carved stones was constructed by the Office of Public Works in 1946, providing a gathered, protected setting for material that might otherwise have been scattered or lost. The cross-slab itself was documented by Ó hÉailidhe, whose 1967 study recorded its dimensions, its sandstone composition, and the character of its carving, an outlined Latin cross being one of the simpler and older forms of Christian decorative stonework, where the shape of the cross is defined by an incised line rather than by raised relief.