Mega Builders
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.
Please log in to leave a comment.
No comments yet. Be the first to share your thoughts!
Add a play
When did you watch this?
Install Scrob
Add to your home screen for the full app experience.
No comments yet. Be the first to share your thoughts!