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Hidden tunnels that saw a city prosper, a sunken wreck with a remarkable past, a concrete wartime dome and a mysterious Cold War building.
Abandoned Engineering
Series 3
6
April 30, 2019
44 minutes
Andrew Gough
Self
Roma Agrawal
Self
James Corum
Self
Jim Meigs
Self
Rob Bell
Self
Dougal Jerram
Self