The Great Wall of China: The Hidden Story

The Great Wall of China is mankind's ultimate creation, but it is far more than bricks and mortar. It has guarded its secrets for over 2,800 years - no one knows how long it is, who built it, or why it evolved. With access to the first nationwide survey, we finally reveal its extraordinary magnitude, rewrite its millennia-long history and decode its complex signals system. This film follows state-of-the-art drones as they map the vast edifice, while cutting-edge chemistry proves its design secret can be found in every kitchen and we discover that there is far more than one Great Wall... (Viasat)