Measuring roughly 79 metres north to south and 84.5 metres east to west, the enclosure is defined by an inner earthen bank, a fosse (a defensive or boundary ditch), and a second outer bank beyond that. What makes it quietly puzzling is its absence from the first edition Ordnance Survey six-inch map of 1840, despite being clearly depicted on an estate map drawn forty years earlier, in 1800. It did not vanish; it was simply never picked up by the surveyors, which raises the possibility that it had already begun to blend into the landscape by the mid-nineteenth century, losing its function and its legibility at roughly the same time.

The structure itself is substantial. The inner bank stands about 1.44 metres high on its exterior face, with a fosse 4.5 metres wide and nearly a metre deep running alongside it, then a further outer bank of similar width. That combination of bank, ditch, and counterscarp is a fairly deliberate piece of earthmoving, suggesting a designed landscape feature rather than anything agricultural in origin. The current interpretation is that it was an estate feature, the kind of ornamental or boundary enclosure that landed families of the late eighteenth century sometimes constructed to organise their demesne, frame a view, or simply assert order over a stretch of ground. The lazy beds visible inside the enclosure, long parallel ridges used for growing potatoes and oriented northeast to southwest, point to a later episode of cultivation within what had perhaps already ceased to function as intended. Parts of the site have been disturbed over time: the fosse is partially infilled to the north, the inner bank has been reduced to a low scarp on the east, some quarrying has taken place into the southern section of the inner bank, and the fosse and outer bank have been lost entirely in the southwest quadrant. A deep drainage gully runs along the outer base of the northern bank.