By Jo Best, 20 October 2008 12:39
Welcome to the Kingsway Tunnel, 100 feet below the streets of Holborn.
The tunnels are shown above being constructed in the 1940s. During their 60-year history, they have played home to the Post Office and MI6.
They're now the property of BT - but not for long.
Photo credit: BT



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1. Dale Simkin
Pool Tables!
Those would appear by the size and shape , and the balls on the surface to be Snooker tables!