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- Season 0 2015-11-11
- Season 1 2015-01-08
- Season 2 2015-10-07
- Season 3 2016-11-02
- Season 4 2017-12-27
- Season 5 2018-05-29
- Season 6 2018-10-07
- Season 7 2019-04-07
- Season 8 2019-08-07
- Season 9 2020-02-04
- Season 10 2021-07-21
- Season 11 2022-05-25
- Season 12 2023-05-24
- Season 13 2023-11-15
- Season 14 2024-06-19
Season 14 Episode
- Season 4 Viking Secrets
- Season 4 Vikings in America
- Season 4 Origins of Stonehenge
- Season 4 The Secret
- Season 4 Butch Cassidy's Lost Loot
- Season 4 Hunt for the Metal Library
- Season 4 Great Women of Ancient Egypt
- Season 4 Egypt's Lost Queens
- Season 4 Global Game Show: Out of This World
- Season 4 Secrets of Brother XII
Expedition Unknown - Season 4 Episode 6 Hunt for the Metal Library
7.90 48 minutes Josh travels through the jungles of Ecuador to explore the watery depths of Tayos Cave for a legendary set of metal plates believed to be created by an advanced ancient civilization.
