With access to the first nationwide survey and state-of-the-art drones mapping the Great Wall of China, this documentary offers new evidence that reveals its extraordinary magnitude, rewrites its millennia-long history and decodes its complex signals system. Using cutting-edge chemistry, the programme also finds out what has kept the wall standing for so long - a simple cooking ingredient found in kitchens across the world.
Title | Secret History - Season 14 Episode 4 The Great Wall of China: The Hidden Story |
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Year | 2017 |
Genre | Documentary |
Country | United Kingdom |
Studio | Channel 4 |
Cast | |
Crew | |
Alternative Titles | |
Keyword | |
First Air Date | Nov 14, 1991 |
Last Air date | Nov 12, 2017 |
Season | 17 Season |
Episode | 117 Episode |
Runtime | 26:14 minutes |
Quality | HD |
IMDb: | 7.00/ 10 by 1.00 users |
Popularity | 11.983 |
Language | English |