 These two documentary sources suggest that the motte may have been of a similar type to the motte excavated at South Mimms, Hertfordshire in the 1960s.Although the South Mimms motte looked like a typical castle earthwork they found that "the tower was set within the motte, and the entrance to the castle was gained via a tunnel through the motte into the tower".Most of the mound at South Mimms had been revetted so that little of the motte was visible.