Jersey War Tunnels

6th November 2019 45 mins Season 1 Episode 7

The underground bases built by the German army during the occupation of Jersey, and a group of more than 20 underground cities in Turkey, one of which dates back to 800BC.

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Season 1 · Episode 8

The Maginot Line

The secrets of the largest subterranean fortress along France's border with Germany, and a look at how a unique precious mineral was discovered in Derbyshire.

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