A London underground line, opened in 1900 and coloured red on the tube map.
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- MOD Corsham
Now known by the name MOD Corsham and formerly JSU Corsham (Joint Service Unit) and RAF Rudloe Manor. A large military site which sits directly above the MOD's underground tunnel complex. During the Second World War the underground site made up part of a massive ammunitions depot and the world's largest underground factory. Later these tunnels became a government's emergency relocation site and various communication bunkers were also set up here.