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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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CAD
Corsham
Sub
Depot 1 Tunnel Quarry

WW2:
The switchroom - a bank of polished black cabinets
generously fitted with meters, dials and winking coloured
signal
lights.

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