Castle Hill is a possible medieval earth and timber ringwork fortress. Standing on the edge of a high escarpment and encased by the remains of a ditch, the partial rectangular ringwork merges with the steep southern scarp of the ridge. It is said that a keep was still visible in 1819 but this was possibly just the high remains of ramparts of heaped stone. Extensively quarried, the damaged earthwork is now confused and is perhaps just a hill in Castle Field. Nearby is Bailey Hill.