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 ...

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 ...

Across the world, road tunnels have quietly stretched longer, dived deeper, and grown more ambitious, reshaping how people move through mountains and under seas. The longest of these projects are no ...

Swiss engineer Carl Eduard Gruner first imagined it in 1947: a massive tunnel, unprecedented in length, buried a mile and a half under Switzerland's symbolic Gotthard mountain range. Nearly seven ...

It'll only be a matter of time before Norway is home to the world's deepest and longest undersea road tunnel. The tunnel is billed as "Rogfast," which is short for "Rogaland fastforbindelse" — named ...