17 Temporada
117 Episodio
Secret History - Season 14 Episode 4 Episodio 4
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.
- Año: 2017
- País: United Kingdom
- Género: Documentary
- Estudio: Channel 4
- Palabra clave:
- Director: Nick London
- Emitir:
"
"
