It is pierced not once but twice, with a small circular hole near the top and another near the base, each no wider than a couple of centimetres. Holed stones, used as grave markers, are found at a number of early Irish burial sites, but this double perforation has no known parallel elsewhere.

Kildrum Graveyard sits at around fifty metres above sea level on the lower slopes of Leathaoibh, looking south over Dingle Harbour and northeast towards Mount Brandon. The ground beneath it holds the ghost of a medieval church and an oval enclosure still legible on the first edition Ordnance Survey map of 1841, though nothing of either structure remains visible above the surface today. What does survive is a dense scatter of roughly three hundred markers, many of them small, notched, or carved with simple crosses, their arrangement thought to preserve the memory of the vanished building and its enclosure. Laurence Dunne recorded three holed stones here during a 2010 graveyard survey. The double-perforated example, measuring 0.43 metres by 0.23 metres, is the most unusual of the three. One explanation put forward is that it was a re-used stone, chosen precisely because of its existing holes, and placed as a burial marker for an unbaptised child in the ceallúragh section of the graveyard. A ceallúragh, sometimes called a cillín, was an area within or adjacent to a burial ground set aside for those who could not, under Catholic practice, receive formal Christian burial, most often infants who died before baptism. The use of a pre-perforated stone rather than a purpose-made marker would be consistent with the informal, improvised nature of such burials.