9 Sezon
77 Episod
Extreme Engineering - Season 8 Episode 8 Episodul 8 (2011)
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.
- Țară : United States of America
- Gen : Documentary
- Studio : Discovery
- Director :
- Distribuție :
