When did Underground Worlds Season 1 Episode 2 air?
Underground Worlds Season 1 Episode 2 aired on October 2, 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 2
Sweden
Oct 2, 2019·45m
Explores how Sweden has gone to extraordinary lengths to protect itself - by excavating 65,000 nuclear bunkers. Plus, Somerset's Cheddar Gorge and an underground first in Romania.
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How long is Underground Worlds Season 1 Episode 2?
This episode runs for approximately 45 minutes.
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