A large bank is visible as an intermittent earthwork on 1940s aerial photography. Seven sections of bank are visible running for nearly 1.5km in total; one section is formed by double parallel bank. It follows a sinuous course, initially aligned WNW-ESE, then c.W-E over the central section with its final section adopting a NW-SE aligned course. The bank does not appear to be a part of the field system shown in this area on historic Ordnance Survey mapping. It is likely to be of medieval or earlier post-medieval date and may be a flood bank or related to the reclamation of land from the Wantsum Channel during these periods. It appears to have been plough-levelled by the 1960s as aerial photographs of this date show it as a cropmark.