A strange complex of tunnels on the grounds of a bizarre mansion were under lock-and-key for a century. Since its rediscovery, some believe its mysterious place is a gate to hell. New discoveries reveal its secret purpose and why it was abandoned.
| Title | Alien Hell Portal |
|---|---|
| Genres | Documentary |
| Release Date | 2019-05-16 |
| Episode Runtime | 00 Hours 42 Minutes |
| Season Number | 4 |
| Episode Number | 7 |
| Production Companies | Travel Channel, Science Channel, Procter & Gamble Productions, Like A Shot Entertainment |
