Measuring roughly thirteen centimetres high and just over thirteen wide, with barely a centimetre of its face exposed, it preserves only two limbs of an incised outline cross. The original shape of the slab from which it came is unknown; what survives is a fragment of a fragment, a partial gesture toward a form that can no longer be fully read.

The stone came to light during an excavation carried out in 1944 by Duignan, and was subsequently catalogued by scholars Okasha and Forsyth in their 2001 study of inscribed stones, where it appears as Toureen Peacaun 23. Cross-slabs of this kind, flat stones incised with a cross rather than carved in relief or three dimensions, were common markers in early medieval Irish ecclesiastical contexts, used to denote burial sites or sacred boundaries. That this example survives only as a fragment, and has been absorbed into the fabric of a later church wall, is not unusual; building stone was routinely reused across centuries, and early carved pieces frequently ended up as convenient fill. What makes this one worth noting is precisely that smallness, the sense that something deliberate and possibly significant has been reduced, by time or necessity, to almost nothing.