Despite J.D. Beglar's description during the later 19th century of the extant fortification towers and moat (The walls had towers, also of earth, at each of the four corners, and also on each flank of each of the eight entrances), without photos and drawings, the remains are difficult to visualize and comprehend. In 1956 Debala Mitra of the Archaeological Survey of India transected the northern glacis with a trench. The now collapsed trench of this investigation appears to lie just east of the eastern gate of the north wall. It is near the great Shiva temple Kaleswar & Rameswar (which is known as a temple where Shiva and Vishnu are seen together).