It is not the stonework of the wall itself that catches the eye, but the deliberate hole cut through the slab's body, a feature that places it within a category of prehistoric and early medieval stones whose precise purpose still generates more questions than answers. Holed stones appear across Ireland and Britain in various contexts, associated with oath-taking, ritual passage, healing, or boundary-marking, though attributing any single function to a specific example is generally beyond what the surviving evidence supports. What is certain is that someone, at some point, went to considerable effort to perforate a substantial piece of granite.

The slab measures 1.45 metres long, 0.8 metres wide, and 0.2 metres thick, so it is not a modest object. It was unearthed at the turn of the twentieth century, presumably during some work at or near the church site, and subsequently positioned against the east wall where it now rests. Rathmichael church itself sits on the eastern slopes of Carrickgollogan, a hill in south County Dublin whose name connects it to a broader landscape of early ecclesiastical settlement. The church ruins form part of a recorded monument cluster, catalogued under the reference DU026-050001, and the holed stone is considered part of that complex. The record was compiled by Geraldine Stout and Padraig Clancy and revised by Caimin O'Brien.

Rathmichael is accessible from the roads skirting the southern Dublin foothills, and the church ruins are a short walk from the surrounding area. The stone sits inside the roofless shell of the building, propped against the east wall, so it is visible without any excavation or special access. For those who want to examine the object more closely before or after visiting, a three-dimensional model is available online at skfb.ly/oHrsz, which allows the perforation and surface texture to be inspected in detail. The site sits in a quietly atmospheric stretch of landscape, and the stone itself rewards a slow look, particularly the hole, which is cleanly worked and clearly intentional rather than accidental erosion.