A roughly circular enclosure, approximately 35 metres in diameter, appears as a cropmark, the subtle discolouration in growing crops that betrays buried or disturbed ground beneath. What makes it quietly puzzling is not its size or shape, but the gap between how it looked in one era and how it appears now.

The Ordnance Survey's six-inch map of 1836 records the feature as triangular, while the 1908 edition shows it as a small circular copse, a tight cluster of trees. Somewhere between those two dates, the geometry changed, or at least the way it was read and drawn did. The enclosure itself is defined by a single fosse, a ditch or channel cut into the ground, and is most likely a demesne feature rather than anything prehistoric or early medieval. Demesne landscapes, the ornamental and working grounds attached to landed estates, frequently included planted enclosures, specimen trees, and geometric arrangements that served aesthetic or practical purposes and were designed to be seen, at least from the house. Over time, as estates declined and planting matured or was cleared, such features could shift considerably in appearance. What was once a shaped plantation might reduce to a faint ring in the soil, legible only from altitude.