The one at Fanningstown in County Limerick is, by any measure, modest: roughly ninety centimetres high, ninety centimetres wide, and just over half a metre thick. What makes it quietly unusual is its material. Recorded in 1943 as an irregularly shaped boulder of volcanic breccia, it is a rock type that speaks to geological processes far older than anything human hands arranged. Breccia is a coarse-grained rock made up of angular fragments cemented together, and a volcanic variety points to ancient igneous activity, which makes the choice of this particular stone, whether deliberate or incidental, a small puzzle sitting in a Limerick field.

The stone was documented by O'Kelly in 1943, recorded with the careful measurements that characterise mid-twentieth-century fieldwork in Irish archaeology. At that time it was noted as sitting beside a graveyard, referenced in the Sites and Monuments Record as LI022-043002. The proximity to a burial ground is a pattern seen at a number of Irish standing stones, where prehistoric markers and later Christian burial sites occupy the same ground across centuries, each generation finding meaning in a place already marked out as significant. Whether the stone predates the graveyard by centuries or millennia is not recorded, but the association is a common one across the Irish landscape.

Fanningstown lies in the Smallcounty barony of County Limerick, and the stone can be located using the national Sites and Monuments Record reference. Because it sits adjacent to a graveyard, the surrounding area is likely accessible, though as with many such sites on or near private land, it is worth checking locally before approaching. The stone is small enough that a visitor unfamiliar with the site could easily overlook it, so knowing in advance what to look for, a low, wide, rough-edged boulder rather than a dramatic monolith, will save some searching.