Many of the world's most mysterious abandoned buildings are hidden underwater and underground. But now, experts use cutting-edge tech to reveal the secrets of these strange places and finally explain why they were deserted. The segments of this special come from various episodes. |
||
Title: | Secrets of the Abyss | |
Air Date: | December 19, 2019 | |
Runtime: | 60 min | |
Genres: | Mystery History | |
random000 : It's time to put on makeup. It's time to dress up right. It's time to raise the curtain on...