Seasons
1
Episodes
6
Networks
National Geographic
Countries
US
First aired
2019-10-20
Last aired
2019-11-24
Language
en
Rating
7.1 / 10
Episode release dates
Precise schedule unavailable
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Synopsis and details
A mission to discover and re-create unexcavated worlds still hidden beneath the earth.
Seasons and episodes
Season 1
6 episodes · 2019-10-20
Cast
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