The Gotthard Base Tunnel is a railway tunnel in Switzerland that is the longest and deepest in the world. It runs for 57 km (35.4 mi) between Erstfeld in the canton of Uri and Bodio in the canton of Ticino. The tunnel
The Gotthard Base Tunnel is a railway tunnel in Switzerland that is the longest and deepest in the world. It runs for 57 km (35.4 mi) between Erstfeld in the canton of Uri and Bodio in the canton of Ticino. The tunnel