It’s Now Official: World’s Longest Tunnel is 35 miles long and Connects Switzerland and Italy
Tunneling and track-laying for the 35-mile NEAT Gotthard Base Tunnel has been completed, making it officially the longest tunnel in the world, surpassing Japan’s 14-1/2-mile Seikan Tunnel. . . .ย Testing is underway,ย in anticipation of the first passenger and freight trains in June 2016.
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