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Presenter Paul Rose gets special access to go inside a Cold War bunker in the Yorkshire Wolds.

The Wolds played an important role during the Cold War and there is still evidence of military operations if you look very carefully in the landscape.

A concrete bunker high on the Wolds was one of around 1,500 built across the UK. They were only stood down in the early 1990s.

The volunteers were trained to use monitoring equipment to detect the size and direction of any potential nuclear attack.

A small concrete 7 x 16 feet room became the command centre of their operations.

Archive footage is courtesy and copyright of British Pathe, Government Information Films and the BFI.