Where To Stream Underground Marvels Season 1 Episode 3
Secrets of the Terror Tunnels
- Aired October 31, 2019
- 60 Min
- Rated 9.5
- Number 3 Of 16 Rated Episodes
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.