The Maginot Line
Underground Worlds · 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.
Episode Details
Air date, runtime, timezone, and episode position.
Season
1
Episode
8
Air Date
13/Nov/2019
Air Time
—
Runtime
45 min
Overview
Episode summary.
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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