 Archaeological and geophysical research has found a ditch around the hilltop, with a masonry square within it, while fragments of 12th century pottery have been found on the site.One theory is that this is a Norman motte; another that it is a 13th-century manor house; alternatively it may be simply have been a local folly.The manor had been granted to Richard de Redvers by Henry I by the year 1107 and it is thought that his son Baldwin built on the hill.