What makes it quietly anomalous is not its size or drama but its ambiguity: a roughly subcircular platform, grass-covered and edged with scrub, defined by the kind of earthworks that could date to almost any period of Irish prehistory or early history, and which have so far yielded no material evidence to narrow that window down.

The enclosure measures roughly 48.5 metres on its longer north-northwest to south-southeast axis and around 40 metres across the other way. Its defences are a combination of an earthen bank running along the eastern, western, and northern sides, and a fosse, essentially a defensive ditch, cutting across the spur to the south and east, where it transitions into a berm, a flat shelf of ground between the ditch and any inner rampart. A stream runs just outside the western edge, which would have added a natural element to the site's defences or simply made the ground more difficult to approach. The entrance, on the southeastern side, is a gap through the bank just two metres wide at its base, with a causeway across the fosse that stands 1.3 metres high and is nearly four metres wide at the top. Archaeological testing carried out immediately to the southeast of the enclosure, documented under excavation licence 10E0208 and reported by McGonigle in 2010 and 2012, produced no related material, leaving the site's origins and date effectively open.