It is the kind of feature that could pass for a natural rise in the ground, and for most of recorded history that is more or less how it was treated. When the Ordnance Survey mapped the area in the early twentieth century, the 1907 edition of their six-inch map noted it only as a hachured feature, the cartographic shorthand for a vague or indistinct earthwork, with no name or classification attached.

The enclosure is roughly subcircular in plan, measuring about 26 metres from east-northeast to west-southwest and 21 metres across in the other direction. It is defined by a fosse, the term used for a ditch dug as part of a defensive or boundary earthwork, and an outer earthen bank that still stands to an external height of around 1.9 metres on its surviving southern side. The bank has been largely removed to the north and northeast, whether by agricultural activity or deliberate clearance is not recorded. Two entrance gaps break the circuit, one to the south-southeast and one to the north-northwest, suggesting the enclosure was designed with opposing access points, a layout sometimes associated with enclosures of early medieval date in Ireland, though the age of this particular example has not been firmly established. Mature deciduous trees now grow along the bank, their roots binding what earthwork remains.