Deep below the Alps, huge tunnelling machines are cutting their way through the mountain massif. The longest railway tunnel ...

Add Yahoo as a preferred source to see more of our stories on Google. 00 longest tunnels opener laerda Tunnels are used to carry traffic through some of the most extreme terrain on the planet and they ...

The Gotthard tunnel stretches 57km in what is a 20 minute passage beneath the magnificent Alps. Impressively, its 2.3km depth ...

Train at Gotthard Base Tunnel in Switzerland, with mountains behind - Michael Derrer Fuchs/Shutterstock Switzerland is known around the world for its spectacular scenery — think snow-capped mountains, ...

Tunnels are used to carry traffic through some of the most extreme terrain on the planet and they help ease journeys with reduced travel time. While most tunnels offer a short underground burst of ...