The Ordnance Survey mapped it three times across nearly a century, and each time the cartographers drew something different: a square of roughly twenty metres a side in 1842, an oval stretching to about thirty metres by twenty-two in 1905, and something approaching a circle with a diameter of around twenty-five metres by 1936. The site itself has not resolved the question, because the interior is now so heavily overgrown and cluttered with dumped material that its true outline cannot be read on the ground at all.

What survives is an earthen bank, the kind of low raised boundary typical of early medieval enclosures, often associated with ringforts or ecclesiastical sites, though no specific function has been assigned to this one. The bank stands about half a metre high on the interior and slightly taller, around eighty centimetres, on the exterior, which suggests the ground inside was either slightly raised or that spoil was thrown outward when the enclosure was first constructed. For most of its circumference the bank has been further buried beneath field clearance stones and cut branches, the slow accumulation of agricultural tidying across generations. The divergence between the three OS maps is not necessarily a sign of cartographic carelessness; enclosures of this type can read very differently depending on the season, the state of the vegetation, and the angle from which a surveyor approaches a ridge-top site.