Cropmarks of a probable Iron Age or Roman enclosure, on land to the north of Grebby Hall. Visible as a four-sided, asymmetrical enclosure, defiend by a single ditch with an entrance to the east, and measuring roughly 65m by 60m. Identified on aerial photography examined as part of the National Mapping Programme. {1} More recent analysis of the aerial photography for this area identified the enclosure as cropmarks. The sides of the enclosure are roughly straight, with the corners slightly curved. The is a simple, terminally-defined entrance in the eastern side. The enclosure is trapezoidal in shape, measuring 42m north to south, and 58m wide across the northern end, tapering to 41m wide across the southern end. {2}{3}