It is a modest object in terms of size, measuring 1.15 metres long, 0.62 metres wide, and just four centimetres thick, but the carving on its rough, undressed upper surface rewards a closer look. Incised into the stone is an outline cross with median lines and fishtail terminals, the latter being a decorative flourish in which the arms of the cross splay outward at their ends in a forked or fan-like shape, a motif found on early medieval Irish carved stones.

The slab sits at the foot of another stone, catalogued separately, which suggests it was positioned there deliberately rather than having simply fallen or been discarded. Early Christian monastic sites in Ireland frequently accumulated carved stonework of this kind, used variously as grave markers, boundary indicators, or devotional objects. Church Island, situated off the Iveragh Peninsula in south Kerry, was the site of such a monastic settlement, and the presence of inscribed slabs like this one is consistent with that kind of early ecclesiastical activity. The cross type visible here, with its clean outline and terminal decoration, belongs to a tradition of stone carving that flourished in Ireland roughly between the sixth and twelfth centuries, though pinning individual examples to a precise date is rarely straightforward.