Measuring one and a half metres long and less than half a metre wide, the flat recumbent stone lies in the western half of a burial ground known as the Saint's graveyard on Inis Cealtra, that island off the Clare shore long associated with early Christian settlement. It carries no inscription, no knotwork, no carved cross; nothing that would allow a researcher to attach it to a particular life or death.

The stone was recorded by R.A.S. Macalister, the prolific archaeologist and epigrapher who surveyed the island's antiquities in 1916 and 1917. Macalister drew the slab onto his plan of the graveyard, plate XV of his published work, but assigned it no number, a small act of omission that has left it hovering at the edge of the formal record ever since. Its position is precise enough: 14.6 metres from the southern wall of the enclosure and 6 metres from the western wall. That specificity, set against the complete absence of decoration or identification on the stone itself, gives it a quietly odd quality. Someone thought it worth measuring and placing on a map, but not worth distinguishing from the ground it lay on.