Season 2, Episode 5

Armageddon Highway

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.
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Upcoming Airings

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Aug 27
12pm | 11c
Aug 30
1pm | 12c

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Secrets of the Alien Shrine