An ogham stone, originally carved to commemorate or identify someone in early medieval Ireland, was at some point repurposed as a roof lintel inside a souterrain, the kind of underground stone-lined passage built beneath ringforts for storage or refuge. The inscription, rather than standing upright in a field where scholars might read it cleanly, now bears the weight of the earth above.

Ogham is an early Irish script in which letters are represented by groups of notched or scored lines cut along the edge or face of a stone, typically read from the bottom upward. On this particular slab, a narrow piece of sandstone forming part of the roof passage north of the main chamber, fifteen scores can be made out on the south angle. Six appear on the narrow face, nine on the broad face, lightly chiselled and shallow. The inscription does not end cleanly; it simply disappears into the surrounding wall of the souterrain, where the lintel has been set into the stonework. Whether the scores on the broad face cross the angle, which would affect how the letters are read, cannot be determined without moving the stone itself. Field survey work carried out in 1995 recorded what was visible and noted what remained frustratingly out of reach.