Download 4K
Download 4K
Download 4K
Download HD
Download SD
Download SD
Download SDSeason
Season 9 Episode
- Season 1 Tokyo's Sky City
- Season 1 Subways in America
- Season 1 Transatlantic Tunnel
- Season 1 City in a Pyramid
- Season 1 Bridging the Bering Strait
- Season 1 Tunneling Under the Alps
- Season 1 Building Hong Kong's Airport
- Season 1 Holland's Barriers to the Sea
- Season 1 Boston's Big Dig
- Season 1 Widening the Panama Canal
Extreme Engineering - Season 1 Episode 6 Tunneling Under the Alps
7.00 60 minutes 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.
