Gotthard Tunnel

Extreme Engineering: "Gotthard Tunnel"

Season 3 · Episode 5

Extreme Engineering Season 3 Episode 5

Extreme Engineering: "Gotthard Tunnel" Season 3 · Episode 5

The Gotthard Base Tunnel underneath the Swiss Alps will be the world's longest rail tunnel upon completion in 2015.

Quality: HD

Release: 01 Jan 2006

Views: 4

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