Seasons and episodes
1Season 1 Feb. 14, 2017
1 - 1Capone's Escape Tunnels Feb. 14, 2017- 1 - 2Mystery of the Serpent Mound Feb. 21, 2017
- 1 - 3America's Buried Massacre Feb. 28, 2017
- 1 - 4Rocky Mountain Monsters Mar. 07, 2017
- 1 - 5Great Lakes Bermuda Triangle Mar. 14, 2017
- 1 - 6California's Hidden Doomsday Mar. 21, 2017
- 1 - 7Secret History of the New World Mar. 28, 2017
- 1 - 8American Stonehenge Apr. 04, 2017
2Season 2 Oct. 28, 2017
2 - 1Legend of the Nazi Gold Oct. 28, 2017
2 - 2King Solomon's Treasures Nov. 04, 2017
2 - 3Tesla's Final Secrets Nov. 11, 2017
2 - 4Doomsday Volcano of the Gods Nov. 18, 2017
2 - 5Atlantis in America Nov. 25, 2017
2 - 7Lost Pirate City Treasure Dec. 09, 2017- 2 - 8Quest for the Gold Rush Fortune Dec. 16, 2017
Synopsis
A search for an underground escape route said to have been used by Al Capone. Also: who or what built earthen mounds in Washington state.
Original title Secrets of the Underground
TMDb Rating 6.3
First air date Feb. 14, 2017
Last air date Dec. 16, 2017
Average Duration 60 minutes
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