The site at Kilnadur is a modest rectangular enclosure, roughly 35 metres north to south and 29 metres east to west, bounded on three sides by a stone wall less than a metre high and just over a metre thick, with a field fence closing the southern edge. Two entrances break the perimeter, one in the north wall and one in the west.

The 1842 Ordnance Survey six-inch map records it simply as "Kill Grave Yd.", the prefix "kill" deriving from the Irish "cill", meaning a church or early ecclesiastical enclosure, which hints at a foundation considerably older than the map itself. Among the many grave markers within the enclosure, two bullaun stones have been recorded. A bullaun is a boulder or rock with one or more circular depressions worn or carved into its surface; they are found across Ireland in association with early Christian and pre-Christian sites, and their precise function remains debated, though they are commonly linked to ritual use, grinding, or votive practice. Their presence here, alongside ordinary grave markers in a pastoral field, is the kind of quiet anomaly that tends to go unremarked in the landscape.