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Turreted & Castellated Tunnel

County: West Sussex
Postcode: BN6
Location Reference: 5334
Description: Completed in 1841, this tunnel is notable for its turreted and castellated north portal with a single-storey cottage on the top. At 1 mile 499 yards (2,066 m), it is the longest tunnel on the route that it stands on. Located in the heart of the beautiful South Downs National Park, this is an impressive and dramatic backdrop location for filming and photography.