The uncertainty is part of what makes it interesting. Cross-slabs are upright stones incised or carved with a cross, often associated with early medieval Irish monasticism, and this example, classified only as a possible cross-slab, sits in that slightly uncomfortable category of objects that preserve just enough to suggest meaning without confirming it.

The slab was found within the church enclosure on High Island, a small and exposed island off the Connemara coast of County Galway that was home to an early Christian monastic settlement. It is incomplete, measuring roughly 35 centimetres long and 37 centimetres wide, and has been sheared on two sides, meaning whatever original form it held is now only partially readable. Along one of its preserved edges there is a single semicircular notch, and on the upper right side a flat circular boss survives in low relief. Fisher, who recorded the piece in 2014, assigned it a catalogue number and documented these surviving details, but the damage to the stone leaves open the question of whether a cross was ever fully present. The boss and notch are suggestive rather than conclusive. The slab is no longer on the island; it passed into the care of the Office of Public Works and is currently held at their depot in Athenry, County Galway.