The Maginot Line
Underground Worlds

The Maginot Line


Season 1 / Episode 8

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.


Genre - Documentary
Running Time - 1h
Country - GBR
Language - en-GB
Original Air Date - Monday 26th August 2019

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