Ratings
Series Details
Seasons: 2
Total Episodes: 20
Creators:
Networks: U&Yesterday
Status: Returning Series
First Air Date: Sep 25, 2019
Recent Air Date: Mar 14, 2022
Run Time: m
In Production: Yes
Original Language: English
Age Rating: NR
Website: Link
Production Companies:
Sources:
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Keywords
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Where to watch Underground Worlds
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Synopsis
British documentary series exploring incredible feats of human endeavour underground, revealing what people have built, where they have built it, how and why.