Retaining Wall and Adjoining Servants' Tunnel About 65 Yards North-West of Hanbury Hall

The retaining wall and adjoining servants' tunnel, located about 65 yards north-west of Hanbury Hall, date back to the early 18th century but were remodeled in the mid-19th century when the tunnel was added. The wall is constructed of brick in English garden wall bond, featuring some handmade bricks and topped with sandstone copings. It forms a roughly quadrant shape about 25 yards long, with a return at the east end and an entrance to the tunnel at the north end. The tunnel is built of partly blue brick, has a vaulted ceiling, and extends approximately 20 yards to the west. The walls at the west end entrance are splayed and end in short square piers. Originally, the retaining wall was connected to one of a pair of pavilions that marked the boundary between the formal garden designed by George London and the pond and deer park beyond. The original layout is depicted in a perspective drawing from 1732 by Joseph Dougharty.