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THE LONGEST TUNNEL IN THE WORLD OCTOBER 2010
Machine Breaks Out Last Bit in Longest Tunnel
Switzerland - Workers break through last bit of rock in world's longest tunnel
Swiss complete world's longest tunnel
World's Longest Tunnel - How It Was Built - Full Documentary
Joyous Swiss Hail Longest Tunnel Breakthrough
Switzerland Celebrates World's Longest Tunnel
Switzerland has its record-breaking tunnel
The Longest Tunnel in The World - Full Documentary 2016 [HD]
Swiss complete world's longest tunnel Congradulation from PlumberX
The worlds longest tunnel!
The world's longest tunnel
![The Longest Tunnel in The World - Full Documentary 2016 [HD]](https://img.youtube.com/vi/jtLZOcYmjJU/hqdefault.jpg)
