It is not dramatic, and it was never meant to be. What it is, is precise: a roughly trapezoidal area measuring around 23 metres along its west-northwest to east-southeast axis and 14 metres across, its boundaries marked by low linear scarps, which are gentle earthen ridges or steps in the ground formed by the gradual build-up or erosion of soil along an edge. The interior is level, and the whole thing sits immediately to the south of the fosse, the defensive ditch, of an adjacent enclosure.

The scarps that define this feature vary considerably in how well they have survived. The one running to the east-southeast is the most substantial, stretching 21 metres in length and still standing around 0.6 metres high, with a width of over two metres. The south-southwest scarp is shorter and lower, while the west-northwest boundary has become little more than a faint ripple in the ground, less than a tenth of a metre high. What created this arrangement, and when, is not recorded. Its association with the neighbouring enclosure suggests it may have functioned as an annex or outwork of some kind, though such features can also represent later agricultural activity that happened to accumulate around earlier earthworks. Without excavation, the relationship between the two remains a matter of inference rather than certainty.