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77 Episódio
Extreme Engineering - Season 8 Episode 8 Episódio 8
The Swiss government is spending 18 billion dollars to create the Gotthard Base Tunnel - the longest tunnel in the world, getting people and goods through the Alps up to 3 times faster and ultimately changing European transit forever.
- Ano: 2011
- País: United States of America
- Gênero: Documentary
- Estúdio: Discovery
- Palavra-chave: engineering
- Diretor:
- Fundida: