9 Seizoen
77 Aflevering
Extreme Engineering - Season 1 Episode 6 Aflevering 6
A tunnel over 35 miles long is to be dug under the Swiss Alps to redirect Europe's traffic. This $7 billion project will take 6 years to complete with man and machine fighting the mountains 24/7.
- Jaar: 2011
- Land: United States of America
- Genre: Documentary
- Studio: Discovery
- Trefwoord: engineering
- Regisseur:
- Gips: