A strange alien shrine on a mountain peak, a bridge built in the Alaskan wilderness, and an American castle with a dangerous secret are mysterious deserted engineering projects. New discoveries reveal how they were built and why they were abandoned. |
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Title: | Secrets of the Alien Shrine | |
Air Date: | April 24, 2018 | |
Runtime: | 60 min | |
Genres: | Mystery History Travel | |
Alien : Contains spoilers. Click to show. oops!