description About
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.
Info
- verified Status: Ended
- person By: Unknown
- calendar_month Release Date: 2016-04-13
- video_camera_front Companies Twofour, Powderhouse Productions
- tag Season: Season 2
- timer Episode Runtime: 42 Mins
- star Rating: 0 / 10
- visibilityViews: 3 views
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