The enclosure measures roughly 42 metres across internally, defined by a wide, low earthen bank with an internal fosse, a defensive or boundary ditch running along the inside of the bank rather than outside it. That inward placement is one of the small details that makes enclosures of this type worth pausing over; it suggests the structure may have been less about keeping something out and more about delineating a space, perhaps for assembly, settlement, or ritual use. Much of the fosse has silted and softened over the centuries, and today it remains identifiable only along the northern arc.

The enclosure forms part of a larger archaeological complex at Banagher, grouping it with several related monuments in the immediate area. The bank is interrupted by three breaks, at the north-northeast, north-northwest, and south-southeast, which may represent original entrance points or later breaches through agricultural use. That agricultural history is written into the ground itself: cultivation ridges, the raised parallel beds associated with lazy-bed potato farming and earlier tillage practices, run across the interior, meaning the land inside this ancient boundary has been worked and reworked by generations of farmers who may have given little thought to what they were ploughing through. The monument is protected under the National Monuments Acts, having been subject to a preservation order since 1972.