It is easy to overlook, fixed in place as it is, but the bowl worn into its surface tells a longer story. This is a bullaun stone, a type of ancient carved or naturally hollowed rock found across Ireland, often associated with early ecclesiastical sites. The hollows, known as bullauns, were used for grinding, for ritual purposes, or both; scholars continue to debate the full range of their functions, and that ambiguity is part of what makes them interesting.

The stone itself is an irregular oval, measuring 0.65 metres by 0.5 metres. The bowl carved into it is 0.33 metres in diameter and 0.22 metres deep, narrowing to 0.12 metres at the base, a profile that suggests deliberate shaping rather than simple wear. Its current setting, concreted into the floor of the church nave, is a relatively modern intervention, the kind of practical measure that saved many such stones from loss or dispersal while also, inevitably, altering their original context. Whether the stone was always associated with this site or was brought here from elsewhere is not recorded.