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Underground Marvels

Episodes

1. Secrets of the Rock

2. Mystery of the Lost Labyrinth

3. Secrets of the Terror Tunnels

4. The Renegade's Lair

5. Cave of the Body Snatchers

6. World's Biggest Labyrinth

7. Treasures of the Lost Mine

8. Ghosts of the Hell Maze

9. Conspiracy in the Buried City

10. Curse of Cannibal Caves

Sources

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Underground Marvels

Underground Marvels

Documentary

Historians, engineers, and experts take a look at the underground structures, systems, and phenomena that exist beneath our feet.

Date: 10/17/2019

Rating: 6.0

Cast: n/a