Try 30 days of free premium.

World's Longest Tunnel

How did engineers move mountains to build the longest and deepest rail tunnel on the planet? Discover how 25 million tons of rock were moved to build this modern wonder. The Gotthard Base Tunnel has a length of 35.47 miles through the Alps in Switzerland. It opened on 1 June 2016.

Try 30 days of free premium.

Cast Appearances

View full appearance list »

Episode Discussion

No comments yet. Be the first!

Login to leave a comment on this episode.
Try 30 days of free premium.