Mysteries of the Abandoned · SEASON 3
Underwater Ghost Prison
Episode 4 · 2018-10-23

- Documentary
Episode overview
An entrance to the underworld in the American wild, a haunting Soviet underwater prison, and a strange complex of towers in a forest of ice are deserted engineering projects; new discoveries reveal how they were built and why they were abandoned.
45 minutes
Season 3 episodes
1. Doomsday at Dragon's Teeth2018-10-02
2. Nightmare on Blood Mountain2018-10-09
3. Tower of Death2018-10-16
4. Underwater Ghost Prison2018-10-23
5. America's Doomsday Town2018-10-30
6. City of the Damned2018-11-13
7. The Town That Disappeared2018-11-20
8. Nazi Death Star2018-11-27
9. The Real Shawshank2018-12-04
10. Secrets of Alien Stonehenge2018-12-11