Underground Worlds: Gibraltar

45mAired 2019-09-25

This edition explores the hidden network of tunnels and caves beneath Gibraltar that were instrumental to the Allies success during WWII. Plus, the ultimate super-sewer beneath London and a breathtaking cave system in Postojna, Slovenia.

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Underground Worlds: Gibraltar

Gibraltar

Sweden

Switzerland

Kingdom of Salt

Bouzincourt

City of Naours

Jersey War Tunnels

The Maginot Line

Edinburgh Vaults

Dover War Rooms