If We Built It Today S01E06 - Secrets at the Great Wall | 123Movies
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S01 · E06
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S01 · E06
Secrets at the Great Wall
Aug 18, 201945m
The Great Wall of China is one of the world's greatest engineering marvels, and it took dangerous, cutting-edge construction to build it. Experts use the latest tech and modern-day science to reveal if building it a second time would be just as deadly.
