Underground Marvels

World's Biggest Labyrinth

Reality Nov 21, 2019 42 min iTunes

Available on Philo, Prime Video, discovery+, Hulu, Sling TV

S1 E6: The world's biggest labyrinth is a 1,553-mile cave system that's home to some of history's darkest mysteries, and new discoveries at this strange place reveal the long-lost secrets of Nazi occupation, Soviet revolution, and Cold War subterfuge.

Reality Nov 21, 2019 42 min iTunes

TV-PG

Information

Released: 2019
Run Time: 42 min
Rated: TV-PG
Region of Origin: United States

Languages

Original Audio: English
Audio and Subtitles: English (United States) (AAC, CC)

Accessibility

: Closed captions (CC) refer to subtitles in the available language with the addition of relevant non-dialogue information.