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In this episode, Dr. Allan Maca investigates the biggest man-made structure on Earth: the Great Wall of China. This ancient monument has been studied by experts for decades, but it's only now, thanks to new satellite imagery and cutting-edge technology, that its secrets are finally being revealed.
First Air Date : Aug 11, 2020
Last Air date : Aug 30, 2020
Episode : 3 Episode
Season : 1 Season
Runtime: 44:14 minutes
Studio: National Geographic
Country: United States of America
Cast: Allan Maca
Crew:
