Season 6, Episode 1
Tunnel Vision
March 15, 2012
45m minutes
Overview
Return to the 57-kilometer long high-speed rail tunnel in Switzerland's Gotthard Mountain range to see what it will take to finish the project by 2017.
Return to the 57-kilometer long high-speed rail tunnel in Switzerland's Gotthard Mountain range to see what it will take to finish the project by 2017.
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