That a single underground chamber should yield fifteen ogham stones, each one carved with the early Irish script that predates the widespread adoption of the Latin alphabet, is remarkable enough. This particular stone, now on permanent display in the Stone Corridor at University College Cork, carries an inscription along its dexter angle and top, cut in what scholars describe as "knife-cut" scores rather than the broader strokes found on other examples. The carving is in poor condition, which has led to some disagreement about exactly what it says.

The stone came from Ballyknock North in County Cork, where the full group of fifteen was found together in a souterrain associated with a ringfort, the circular enclosed settlements that were the dominant form of rural habitation in early medieval Ireland. Two scholars have attempted to read the surviving inscription. R. A. S. Macalister, writing in 1945, rendered it as GRILAGNI MAQI SCILAGNI, a formula typical of early ogham stones in which a person is identified as the son of another, "maqi" being the archaic genitive of the word for son. Damian McManus, working with the same stone in 2004, produced a closely related but not identical reading: grILAGNI MAQi SCILAGNi, with the mixed capitalisation in his transcription reflecting his assessment of which letters are clearly legible and which are uncertain. The names themselves, GRILAGNI and SCILAGNI, are unattested outside ogham inscriptions, placing them in the category of archaic personal names that did not survive into later Irish tradition.

The Stone Corridor at UCC holds several ogham stones from County Cork, making it one of the more concentrated public collections of early medieval epigraphy in Ireland. The Ballyknock group is particularly significant given the sheer number recovered from a single site. Visitors to the corridor can see the knife-cut scores along the stone's edge at close range, though the wear means that tracing the inscription requires patience and some prior familiarity with how ogham characters are arranged along a central stemline.