What remains is a patchwork of earthen banks, scarps, and undulations, with fragments of stone and brick facing still visible along the south-west side. The enclosure measures roughly 52.8 metres along its north-east to south-west axis, widening from about 48 metres at the north-east end to around 65 metres at the south-west, and its boundaries are defined by a combination of surviving earthen banks, a line of furze bushes, and a ditch, or fosse, running along the southern half of the south-east side. A scarp, a low stepped drop in ground level, cuts across the interior from north-west to south-east, about 17.8 metres in from the north-east side, suggesting the enclosed space was itself subdivided at some point. A well sits at the western corner, tucked between the enclosure and the field boundary.

The brick fragments are significant. Local tradition holds that a brickworks once operated here, which would explain the unusual material mixed into what might otherwise be read as a purely earthen structure. Two fulachta fiadh lie just outside the enclosure to the south-west; these are burnt mounds, prehistoric cooking sites typically associated with the Bronze Age, formed by the repeated heating of stones in water. Their proximity to the enclosure suggests the area attracted repeated human activity across a very long span of time. The name Coppeldy's Castle points to a more recent memory, probably post-medieval, though the identity of any Coppeldy associated with the site does not appear to have been firmly established.