What makes the site worth pausing over is its sheer scale and the deliberate engineering it represents. The enclosed area measures roughly 75 metres from east-north-east to west-south-west and around 60 metres in the perpendicular direction, making it a substantial presence in the landscape even if it no longer announces itself dramatically.

The enclosure is formed by a combination of earthen and stone bank along its northern arc, running from north-west through north to south-east, with the bank measuring between 5.3 and 5.7 metres wide and standing anywhere from 0.45 to 1.5 metres high. Along the remaining circuit, the boundary takes the form of a scarp, essentially a cut or drop in the ground surface, rising between 1.4 and 2.15 metres. A fosse, the term for a defensive ditch, runs along the east-north-east side, about 6 metres wide and a metre deep, while along the western side its course is marked by a berm, a flat strip of ground between the ditch and the bank proper. A survey carried out in 1988 noted a low outer bank to the south, but that feature has since disappeared entirely from the ground surface. No original entrance survives in any recognisable form, which is itself a quietly telling detail: the way in and out of this place has been lost, leaving the interior accessible now only by reading the contours of the earthworks themselves.