That is somewhat unusual, given the name. The stones, seven of them at present, each roughly fist-sized and water-rolled, rest in the basin of a bullaun stone, a type of ancient rock with one or more cup-shaped depressions that are found widely across Ireland, often at early ecclesiastical sites. This particular bullaun sits within the bounds of an old ecclesiastical enclosure, and its basin sometimes holds water. The stones are associated not with ill-wishing but with the cure of warts.

The bullaun appears on Ordnance Survey six-inch maps from both 1840 and 1920 under the name Doughnambraher Font, which suggests it was already understood in terms of its healing rather than harmful associations by the time cartographers recorded it. The ritual performed here involved taking each stone and rubbing it against the affected part of the body, then placing some kind of offering beneath the bullaun itself. These circuits, known as rounds, were still being carried out as recently as February 1993. The number of stones in the basin has shifted across time; a drawing by Stacpoole in 1904 shows nine, MacMahon writing in 1994 recorded ten, and the current count stands at seven. Whether stones have been removed, lost, or occasionally returned is unclear, and the fluctuation is itself a quietly telling detail about sites like this, where the boundary between veneration and casual interference is rarely firm. Elsewhere in Clare, at the altar beside St. John's Well at Killone, stones of the same type do carry the cursing association more explicitly, which makes the Killian example the more ambiguous of the two.