Construction has finally been completed on a 17-year, multi-billion dollar effort to build the world’s longest tunnel directly through Switzerland's Alpine region.
At long last, the world's longest—and deepest—tunnel lives in Switzerland.
After over 15 years and $10.3 billion, the Gotthard Base Tunnel has finally finished construction.
Slicing through the Swiss Alps, the 35-mile stretch of concrete and steel, fixtures and train tracks is more than double the length of the world's now-second-longest Seikan Tunnel in Japan.
Safety tests are due to begin in October and over 3,000 runs will be made in order to ensure all systems are functioning properly.
Passengers and freight will travel at speeds in excess o
