For a monument that has been rooted in a north Cork hillside since prehistory, this is a quiet kind of erasure, the sort that leaves a stone standing in a field without any cartographic acknowledgement for well over a century.

The stone itself is modest in scale, rising to just 0.8 metres in height, with a roughly rectangular plan measuring 0.54 by 0.5 metres and narrowing slightly towards its upper end. Its long axis runs west-northwest to east-southeast, an alignment that may or may not be intentional but is characteristic of the kind of detail that draws archaeologists and enthusiasts to standing stones in the first place. It sits in pasture on a south-southeast-facing slope, the sort of gentle, open ground that prehistoric communities across Ireland tended to favour for these upright markers, whether they served as territorial boundaries, ritual focal points, or something else entirely. Standing stones are among the most common yet least understood monument types in the Irish landscape; their purposes were likely varied, and most resist easy interpretation. This one at Ballyarthur offers no inscription, no associated finds, and no surviving folklore to clarify its origins.