On the ground, you might walk straight past it. A gently raised circle of grass, barely distinguishable from the surrounding field, sitting at the crest of a south-east facing slope in the Curraghmore foothills of County Waterford. It is only from the air, in the right conditions, that the full geometry reveals itself as a cropmark, the kind of faint discolouration in vegetation that betrays buried or disturbed soil beneath, and which aerial photography has made one of the most productive tools in Irish field archaeology.

The enclosure is roughly circular, measuring 41.5 metres across in both directions, and is defined by a slight scarp, a low earthen edge between 0.2 and 0.5 metres high, with traces of a fosse, essentially a ditch, surviving on the northern side. A fosse of this kind would originally have surrounded the enclosed area, likely thrown up as a bank was constructed inward from the digging. The entrance survives as a slight dip, about four metres wide, on the south-south-east of the perimeter. The site sits on a north-east to south-west spur of high ground, south-west of Tower Hill, a position that would have given reasonable command of the surrounding slope. A second enclosure lies approximately 100 metres to the north, suggesting this part of the Curraghmore landscape was once more organised and more occupied than its quiet, grassy present implies.