It is a ring-ditch, a term for a roughly circular ditched enclosure cut into the earth, most commonly associated with prehistoric burial monuments, though their precise function varies from site to site. The only way it has ever truly revealed itself is from the air, showing up as a cropmark, the phenomenon whereby buried ditches and features cause the vegetation above them to grow differently, creating patterns legible only at altitude and in the right conditions.

The ring-ditch was first identified in aerial photographs taken on 16 July 1971, and confirmed in a second set taken on 10 July 1973. Even in those photographs, the picture is incomplete. A field boundary running roughly northeast to southwest cuts directly across the southern portion of the monument, truncating it, so only the northern arc of the circle is visible as a cropmark. What makes this site sit somewhat awkwardly even within its own landscape is that it is far from alone. A considerable cluster of ring-ditches has been recorded in the surrounding area, suggesting that this stretch of the Nore valley was once a focus for some kind of repeated or sustained activity, the nature of which the surviving evidence does not fully explain.