On a south-east-facing slope of Croughaun Hill in County Waterford, a church has effectively vanished into the earth, leaving behind little more than a patch of darker soil and a single carved stone. The site at Kilcanavee is one of those places where the archaeology has been swallowed so completely by agricultural land that its location is known only by tradition and by what the plough occasionally reveals.

According to local tradition recorded by Power in 1952, the church once stood in the north-east corner of a field, and the only persistent evidence is that the soil in that spot turns noticeably darker when the ground is worked. This discolouration is typical of long-occupied ecclesiastical sites, where centuries of human activity, including burials, ash, and organic material, leave a lasting chemical trace in the ground. One physical fragment does survive above ground: a chamfered door jamb, meaning a stone dressed with an angled or bevelled edge that would once have framed a church doorway, has been built into the wall running alongside the adjacent road. Reused in this way, it is easy to miss unless you are looking for it, and easy to mistake for ordinary road-wall rubble once it has spent a generation or two in its new position. Moore documented the site in 1999, and it had been classified as an unlocated ecclesiastical remain as recently as 1988 before being formally listed as a church site in 1995.