The land around it has been reclaimed as grassland, smoothed and reworked over generations of farming, yet the outline of something older persists. Roughly thirty metres across, the feature is defined by a fosse, essentially a ditch or trench cut into the earth, and while it has been largely absorbed into the surrounding landscape, it remains visible when viewed from above on aerial photography.

Enclosures of this kind are scattered across the Irish countryside in considerable numbers, and their origins are not always straightforward to pin down. Circular enclosures defined by a fosse might represent the remains of a ringfort, one of the thousands of enclosed farmsteads built across Ireland during the early medieval period, roughly between the fifth and twelfth centuries. Others turn out to be much older, associated with Bronze Age or Iron Age activity, or even post-medieval in date. Without excavation, it is difficult to say with certainty what this particular enclosure at Maghera was built for or when. What can be said is that the fosse, the defining ditch, is still legible enough in the OSi orthophoto, the high-resolution aerial imagery compiled by Ordnance Survey Ireland, to have been recorded and documented. The site was compiled by Caimin O'Brien and added to the record in June 2020.

The enclosure sits within reclaimed grassland, which means the surrounding terrain has been significantly altered, likely drained and levelled to suit agricultural use. At ground level, the feature may present as little more than a slight depression or a gentle rise in the turf, the kind of irregularity that reads as nothing in particular unless you are looking for it. Anyone visiting would do well to study the aerial imagery beforehand to get a sense of the layout, since the fosse is far easier to trace from above than on foot. Visiting in late winter or early spring, when grass growth is low and the ground is more likely to retain shadow and moisture in any surviving hollows, gives the best chance of making out the shape on the surface.