Tunnel entrance, wall and gateway. Mid C19. Ashlar and iron. Tunnel entrance, set on a plinth with moulded and coped parapet and impost bands. Central single large carriage archway with raised arch and keystone, and double wooden door. Flanked by outer, single, part visible, rusticated pilasters. Extending from the left and right are single curved walls, set on a plinth and coped. Having cast iron brackets near the top. The right wall terminates in the entrance to Glass Court. This is flanked by single square piers surmounted by single orbs and with coped flat arch. (NCC/js)