On the lower, south-east-facing slope of Croughaun Hill in County Waterford, a single carved stone sits embedded in an ordinary road wall. It is easy to mistake for a piece of filler, a convenient lump of old masonry pressed into service where a gap needed plugging. In fact it is a chamfered jambstone, just over forty centimetres long, once part of a dressed doorway belonging to an early ecclesiastical enclosure at Kilcanavee. A chamfered stone is one whose edge has been cut away at an angle, a technique associated with deliberate, skilled construction rather than rough fieldwork, and its presence in a roadside boundary wall is a quiet indication of how thoroughly the original site has been dismantled and its materials redistributed across the landscape.

The stone's origin lies with the ecclesiastical enclosure at Kilcanavee, a site type common in early medieval Ireland, where a boundary, often roughly circular, defined a sacred or monastic precinct. Whatever buildings once stood within that enclosure are long gone, their fabric absorbed into later structures or lost entirely. The jambstone, recorded by Power in 1952, is one of the few surviving fragments that still carries any trace of the original craftsmanship. Set upright into the outer face of the road wall, it is oriented as though someone recognised it as something worth preserving, or at least worth not laying flat.