The Soviet Union built countless engineering marvels beyond the Iron Curtain, but today, these mysterious places are abandoned; experts use cutting-edge tech to reveal the secrets of how they were built and why they were abandoned. The segments of this special come from various episodes. |
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Title: | Secrets of the Soviets | |
Air Date: | December 5, 2019 | |
Runtime: | 60 min | |
Genres: | Mystery History Travel | |
Alien : Contains spoilers. Click to show. oops!