Near the southern bank of the Clodiagh River in County Waterford, there is supposed to be a burial ground that no one can find. It sits, or once sat, on flat ground close to the roadside, reputedly marked by a large evergreen tree. But at ground level, there is nothing to see, and three separate archaeological investigations have come up empty.

The site was recorded by Power in 1952 as a cillín, a term for a small, unconsecrated burial ground, typically used for unbaptised infants and others excluded from formal Church burial. Power described it as a square enclosure of roughly half an acre. That account was specific enough to send archaeologists looking. Between 2002 and 2004, Dave Pollock and Maurice Hurley tested the western side of the road, and Anne-Marie Lennon examined ground south of the field boundary. None of the three excavations produced any archaeological evidence of the site's existence.

What remains is essentially a recorded absence: a place that was described with some precision, associated with a local landmark, mapped in the mid-twentieth century, and then failed to materialise when the soil was actually examined. Whether the cillín was destroyed in the intervening decades, or whether the original location was simply misremembered or misrecorded, is unresolved. It occupies a category that Irish archaeology occasionally throws up, a site that is better documented as a problem than as a place.