Published on Friday, June 10, 2016 by Kathy McCabe On June 1, high-speed passenger trains began cruising through Europe’s – and the world’s – newest and longest railway tunnel, cutting travel time between Zurich and Milan by one hour. The new Gotthard Base Tunnel is 57 kilometers (35.4 miles) long and was carved through the central Swiss Alps. It is almost four times longer than the original Gotthard Tunne...