Secrets of the Underground

TVPG | Science | discovery+

Watch Secrets of the Underground online.

Cast: Rob Nelson, Tim Bechtel, Jared Peacock, Valerie Heest

Scientist Rob Nelson investigates the strangest underground locations in the world.

See which package this show is available in

Secrets of the Underground is available with the following DIRECTV Signature Packages

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Season

2

1

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