The Mount is a possible earthwork motte, which could also be defined as a 17th century garden feature, used as a prospect mound. Standing at the eastern end of a low spur, the mound dominates the entrance to north, west and south-east valleys but nothing is known as to its origin. Possibly connected to salt working, it could also be the spoil from a chalk or clay pit but the mound was considerably altered by Victorian terracing and a spiral walk to the summit. To the west, is Lewes Priory Great Gate and on higher ground to the north is Lewes Castle.