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Underground Worlds: 1x1
Secrets of the Rock
A hidden, subterranean city built within the Rock of Gibraltar was an immense fortress to control the seas during World War II, and new discoveries reveal the secrets of a long-lost chamber with evidence of high-stakes espionage.
1 - 1Secrets of the Rock Oct. 17, 2019- 1 - 2Mystery of the Lost Labyrinth Oct. 24, 2019
- 1 - 3Secrets of the Terror Tunnels Oct. 31, 2019
- 1 - 4The Renegade's Lair Nov. 07, 2019
- 1 - 5Cave of the Body Snatchers Nov. 14, 2019
- 1 - 6World's Biggest Labyrinth Nov. 21, 2019
- 1 - 7Treasures of the Lost Mine Dec. 05, 2019
- 1 - 8Ghosts of the Hell Maze Dec. 12, 2019
- 1 - 9Conspiracy in the Buried City Dec. 19, 2019
- 1 - 10Curse of Cannibal Caves Dec. 26, 2019
