When Swiss engineer Carl Eduard Gruner came up with the idea to build the world’s longest rail tunnel under the Alps in 1947, he predicted the visionary project could be finished by the start of the 21st century.
He would turn out to be off by 16 years.
Gruner’s sketch and technical paper, called Journey through the Gotthard Base Tunnel (GBT)Read more
The world's longest rail tunnel, which runs under the Alps and took 17 years to build, is inaugurated on Wednesday.
Here are four key numbers about the project, called the Gotthard Base Tunnel (GBT).
- 57 -
At a length of 57 kilometres (34.5 miles) the GBT will overtake Japan's 53.9-kilometre Seikan tunnel as the longest rail tunnel in theRead more