Nothing about it announces itself. The ground simply flattens, the grass continues, and if you did not know what you were looking at, you might walk straight across it. What makes the place legible at all is not what stands above the surface but what lies just beneath it: the partial remains of a fosse, a defensive or boundary ditch, still faintly readable in the landscape as a shallow depression curving from north-northeast around to west-southwest.

The enclosure was already old enough to record when the Ordnance Survey mapped it in 1839, appearing on that first edition of the six-inch map as a circular feature with an external diameter of around thirty-five metres. What survives today is D-shaped rather than fully circular, measuring roughly thirty-one metres east to west and thirty metres north to south. The fosse at the southern arc is about eleven metres wide and survives to an internal depth of around 0.9 metres, which is modest but enough to suggest an original boundary of some purpose and deliberation. A fosse of this kind typically accompanied an earthen bank, forming an enclosure that might have served as a farmstead, a ceremonial space, or a defended settlement, though nothing visible remains of any internal features or entrance. The perimeter has been cut away over the centuries by field banks running north to south on the western side and east to west on the north, the ordinary work of agricultural reorganisation quietly erasing what earlier generations had built. The most complete picture of the enclosure's shape comes not from ground level but from the air, where aerial photographs reveal the fosse as a cropmark, the buried ditch causing the vegetation above it to grow differently and so trace the arc of the original boundary across the field.