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What is it all about?

In November 1943 the Press
were invited to have a look around the Secret Underground City.
Click the button above to find out what they saw.
Click on the button below
to see around Tunnel Quarry.

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'You
are unlikely to see these caves of shells, but you might
remember that somewhere in England there is a system of
underground caverns, in which is stored enough TNT to make
the
largest bang in history.'
Ronald
Walker, News Chronicle, 23 November 1943

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