Mysteries of the Abandoned: 4×7: 4x7
Alien Hell Portal
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.
4 - 1World's Strangest Ghost Towns Apr. 07, 2019
4 - 2Secret of Supervillain Island Apr. 11, 2019
4 - 3Escobar's Castle Apr. 18, 2019
4 - 4Labyrinth of the Dead Apr. 25, 2019
4 - 5Treasure Of Outlaw Valley May. 02, 2019
4 - 6Alaska's Fort Apocalypse May. 09, 2019
4 - 7Alien Hell Portal May. 16, 2019
4 - 8Pompeii's Gate To Hell May. 23, 2019
4 - 9Haunting On Plague Island May. 30, 2019