What the eye cannot see from the ground, a camera at altitude can: a cropmark, the subtle variation in how crops grow above disturbed or compacted soil, tracing the line of an ancient fosse, a defensive ditch, that once defined the boundary of this ring-shaped enclosure.

The site is known entirely through a single aerial photograph, reference GB90.BN.26, in which the cropmark resolves clearly enough to establish the enclosure's circular form and its defining ditch. Circular enclosures of this type are common across the Irish landscape and belong broadly to a tradition stretching from the prehistoric period through to the early medieval, when enclosed farmsteads known as raths or ring-forts were built in their thousands. The fosse would originally have been paired with an internal bank, though no surface trace of either survives here. What the aerial image captures is essentially a ghost of that arrangement, preserved not in earthworks but in the differential growth of whatever crop happened to be in the field when the photograph was taken.