THE WORLD`S LONGEST AND DEEPEST RAIL TUNNEL OPENED IN SWITZERLAND, AFTER ALMOST TWO DECADES OF CONSTRUCTION WORK ON DECEMBER 9, 2016. THE 57 KM [35 MILE] TWIN- BORE GOTTHARD BASE TUNNEL WILL PROVIDE A HIGH- SPEED RAIL LINK UNDER THE SWISS ALPS BETWWEN NORTHEN AND SOUTHERN EUROPE. THE GBT HAS SURPASSED JAPAN`S 53.9 KM TUNNEL AS THE WORLD`S LONGEST TRAIN SEIKAN TUNNEL.
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