World's Longest and Deepest Rail Tunnel

It all began with a popular vote on December 16, 1992. That very day, the Swiss decided to implement AlpTransit, a project that would drastically cut travel times from one side of the Alps to the other.
In late 1999 when the rest of the world was concerned about the Y2K bug, four tunnel entrances started to visibly take shape in Switzerland. What is now being inaugurated as the Gotthard Base Tunnel took 17 years of round-the-clock work.
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