Slender, at roughly 36 by 30 centimetres across, it rises to a point in a way that makes it look less like a typical standing stone and more like something that was always meant to carry writing. And indeed it does. Along the northwest corner, the surface bears a weathered ogham inscription, the ancient Irish script in which letters are represented by groups of notches and strokes cut along a central stemline, most often found on standing stones from the early medieval period. The base has been worn down over time, with packing stones now exposed around it, suggesting the ground level has shifted considerably since the pillar was first set in place.

The inscription was read by the scholar R. A. S. Macalister in 1945 as ANM TENAS MACI V, a partial formula that likely recorded a personal name. The word ANM is an Old Irish term meaning "name", commonly used in later ogham inscriptions as a kind of dedicatory marker. MACI means "son of", a standard patronymic construction across hundreds of such stones. The final letter V is all that survives of what would have been a second name, the father's, leaving the identity of the commemorated individual permanently incomplete. On the west face of the stone, there is also a faint incised cross with expanded terminals, the kind of small decorative cross associated with early Christian use, which places this pillar within the wider ecclesiastical landscape of the site. The stone stands within an early ecclesiastical enclosure, and the graveyard it occupies is itself part of that longer continuum of sacred use.