The result is a small fortified enclosure whose northwestern side requires no earthwork at all, the steep natural scarp of the bank serving in place of a constructed rampart. The remaining arc, roughly twenty metres across its longer axis, is defined by a levelled bank that still survives in places, though reduced considerably from whatever height it once reached. It is an economical arrangement, one that speaks to a practical intelligence about landscape.

The monument sits on a natural rise within what is now tillage ground, a setting that has done little to preserve the subtler details of the earthwork. The surviving bank, widest at around three and a half metres and standing no more than half a metre internally, is best read along its northeastern to southeastern stretch. From the northeastern end, a long linear bank extends outward for some forty-eight metres before curving back toward the river's edge, suggesting a larger system of enclosure around the central fort. That outer enclosure was still legible enough in the mid-nineteenth century to be recorded on the first edition Ordnance Survey six-inch map of 1840, where it was marked as a field boundary, the kind of quiet misidentification that has seen many an ancient earthwork absorbed into the agricultural landscape without anyone quite noticing the difference.