When did Underground Worlds Season 1 Episode 3 air?
Underground Worlds Season 1 Episode 3 aired on October 9, 2019.
Underground Worlds
British documentary series exploring incredible feats of human endeavour underground, revealing what people have built, where they have built it, how and why.
Season 1 · Episode 3
Switzerland
Oct 9, 2019·45m
A look at some of Switzerland's 300,000 subterranean bunkers, the creation of a local entrepreneur shrouded in mystery in England and a network of tunnels deep beneath Slovenia.
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Direct answers for episode-level questions and details.
How long is Underground Worlds Season 1 Episode 3?
This episode runs for approximately 45 minutes.
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