The circular enclosure there, roughly twenty-five metres in diameter at its widest, leaves no visible trace at the surface. No earthwork, no raised bank, no obvious depression. It exists, as far as ground-level observation goes, as nothing at all.

What reveals it is the crop. Under the right growing conditions, buried features such as ditches, or fosses, retain moisture differently from the surrounding soil, and the plants above them respond accordingly, growing taller or changing colour in ways that become legible from the air. It was an aerial photograph that first disclosed this enclosure, showing the outline of a narrow fosse, the ditch that would once have defined the perimeter of a small enclosed site, curving into a circle on the edge of a low ridge that drops away sharply to the north. Circular enclosures of this kind are common enough across Ireland, associated variously with settlement, ritual, or burial, though without excavation it is rarely possible to say which. The positioning here, on a ridge edge with a commanding view down a steep slope, is fairly typical of sites where the choice of ground was deliberate, whether for defence, visibility, or simply a preference for elevated, well-drained land.