Secret Underground Harrogate, A Secret Tunnel. Railway Tunnel with WW2 history.

Brunswick Tunnel, also known as Harrogate Tunnel, is a 400-yard long railway tunnel in Harrogate, North Yorkshire. It was built in 1848 by the York and North Midland Railway to carry trains to Brunswick station, which was later replaced by the current Harrogate station. During World War II, the tunnel was converted into an air raid shelter.