Secrets of the Underground

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

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Season From To Episodes
All Seasons
Specials February 2017 1
Season 1 February 2017 April 2017 8
Season 2 October 2017 December 2017 8
Unassigned Episodes 0
Season From To Episodes
Unassigned Episodes 17
Absolute ordering places all episodes in a single ordered season. This is generally used for anime.
Season From To Episodes
Season 1 0
Unassigned Episodes 17

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