The Gotthard Base Tunnel, which is located in the Swiss Alps, is the world’s longest and deepest railway tunnel, spanning the 35.5-mile distance between the cantons of Uri and Ticino The Gotthard Base Tunnel, which is located in the Swiss Alps, is the world’s longest and deepest railway tunnel, spanning the 35.5-mile distance between the cantons of Uri and Ticino Nottinghamshire Live – NewsRead More