What makes it quietly odd is not its age or its obscurity so much as its geometry: it is pentagonal, an unusual outline for an earthwork enclosure of this kind, which more typically takes a circular or roughly oval form. At the centre, a well now lies covered by stone slabs, and a worn path still runs from those slabs to a narrow gap in the bank to the north-north-east, as though the route between water source and entrance was used often enough to leave a permanent impression in the ground.

The site was already old enough to be recorded when the Ordnance Survey carried out its first six-inch mapping of Ireland in 1842, where it appears as a hachured trapezium, suggesting the surveyors were working from what they could observe on the surface rather than any firm documentary record. By the time the revised OS maps were produced in 1905 and again in 1936, the shape had been clarified as pentagonal, and the enclosure had been absorbed into the surrounding field boundary system, its edges repurposed as convenient dividing lines between agricultural plots. This gradual incorporation into the working landscape is common for earthworks of this type, and it tends to obscure what might originally have been a more legible form. The enclosing bank, an earthen ridge that stands roughly 0.8 metres on the outside and 0.6 metres on the interior, is accompanied by an external fosse, a defensive or demarcating ditch, now running to about 1.4 metres deep in places, though drainage operations over the years have artificially deepened parts of it. Three gaps interrupt the bank, two of them four metres wide on the south-south-west and west sides, and the narrower two-metre entrance to the north-north-east that aligns with the path from the central well. The bank itself is heavily overgrown, making it difficult to read as a coherent structure without some patience and a reasonable eye for earthworks.