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Prices last updated September 8, 2026. Pricing and availability may vary by region.
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Seasons
All seasons
About
Historians, engineers, and experts take a look at the underground structures, systems, and phenomena that exist beneath our feet.
First Aired
Oct 17, 2019
Last Aired
Oct 7, 2021
Seasons
2
Episodes
20
Studio
Phoenix Television, TCB Media Rights
