It is invisible at ground level, but aerial imagery taken in March 2010 caught it in the form of a cropmark, a phenomenon where buried features cause the vegetation above them to grow or discolour differently from the surrounding area, effectively drawing themselves back into visibility from above. In this case, the cropmark traces a narrow fosse, a ditch, no more than about a metre wide, curving in a near-perfect circle through what was once level pasture.

The enclosure was reported by Jean-Charles Caillere, and what the aerial image reveals is not a solitary feature. A second, slightly smaller enclosure sits approximately 17 metres to the west-southwest. Paired or clustered enclosures of this kind are not uncommon in the Irish landscape; they may represent successive phases of activity, related domestic or agricultural use, or simply a community returning to the same patch of ground over generations. Without excavation it is impossible to date them precisely or say what they contained, though circular enclosed settlements of this general type are associated across Ireland with the early medieval period.

There is a particular oddness to the fact that a football pitch now occupies the site. The levelling and maintenance that a playing surface demands may actually have helped preserve the sub-surface archaeology by keeping heavy machinery and deep ploughing away from it, even as the original pasture was converted. The enclosure is not marked, not commemorated, and almost certainly unknown to most of the players who run across it.