A strange Cuban prison, an eerie escape route built for Armageddon, and an underwater marvel that changed history are mysterious deserted engineering projects, and new discoveries reveal how they were built and why they were abandoned.
Cast Appearances
Episode Discussion
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Retitled, this episode re-aired as "Road to Fort Apocalypse" on 3/15/2019 at 2200 with a summary of "New discoveries reveal why the world's most ambitious engineering projects were abandoned, unraveling the dark mysteries and bloody secrets of these strange ruins."
Retitled, this episode re-aired as "Curse of the Alien Prison" on 2/22/2019 at 2000 with a summary of "New discoveries reveal why the world's most ambitious engineering projects were abandoned, unraveling the dark mysteries and bloody secrets of these strange ruins."