Measuring roughly 42.5 metres east to west and 38 metres north to south, it is defined by an earthen bank lined with trees and, along its western to north-northwestern arc, an external fosse, which is simply a ditch dug around an enclosure as a boundary or defensive feature. That fosse survives properly only along that one stretch; elsewhere it has softened into little more than a faint depression in the ground. What makes the site genuinely puzzling is the interior, which rises about one and a half metres toward its centre, giving the whole thing a subtle mounded quality that is not typical of ordinary field enclosures.

The ambiguity is the point. Its closeness to Moycullen Lodge suggests it may have been shaped or maintained as a designed landscape feature, the kind of ornamental earthwork that sometimes accompanied Georgian or post-medieval estate grounds. Yet the underlying form, an oval bank with an external fosse and a raised interior, fits more comfortably with the morphology of an early medieval enclosure, the type associated with ringforts or enclosed settlements that were common across Ireland from roughly the sixth to the twelfth century. Whether an earlier monument was incorporated into a later designed landscape, or whether the whole thing is simply a well-worn earthwork that has aged into ambiguity, is not settled. That unresolved quality is, in its own way, more interesting than a site with a tidy label.