Underground Marvels Season 1 Episode 3
Secrets of the Terror Tunnels
A vast system of tunnels built almost three thousand years ago was the site of the greatest battles of antiquity, and these disorienting passages could be the deadliest weapon in war; experts reveal what made this underground world so terrifying.
1 - 10Curse of Cannibal CavesDec. 26, 2019- 1 - 9Conspiracy in the Buried CityDec. 19, 2019
- 1 - 8Ghosts of the Hell MazeDec. 12, 2019
- 1 - 7Treasures of the Lost MineDec. 05, 2019
- 1 - 6World's Biggest LabyrinthNov. 21, 2019
- 1 - 5Cave of the Body SnatchersNov. 14, 2019
- 1 - 4The Renegade's LairNov. 07, 2019
- 1 - 3Secrets of the Terror TunnelsOct. 31, 2019
- 1 - 2Mystery of the Lost LabyrinthOct. 24, 2019
- 1 - 1Secrets of the RockOct. 17, 2019
