The stone is a bullaun, a type of boulder or outcrop bearing one or more cup-shaped depressions ground into its surface. Bullauns are found across Ireland, often near early Christian sites, and their water has long been associated with healing in folk tradition. The particular power attributed to this one is modest and specific: dip your warts in the collected water, and they will clear. It is the kind of claim that was never meant to invite scepticism, only use.

The record of this stone comes from John Feehan's 1987 work on the area, which noted its location at the rear of Ballynavin House. When fieldworkers went to verify it, the stone could not be found. Whether it was moved, buried, or simply overlooked in the undergrowth is not known. That ambiguity is itself a familiar feature of these smaller monuments, which were never formally protected or prominently marked, and which have a tendency to disappear between one generation's knowledge and the next. The wart cure attached to it belongs to a category of folk belief recorded widely around bullaun stones in Ireland, where the standing water in the depression was thought to carry curative or even cursing properties depending on the ritual performed.