Gotthard Base Tunnel
The Gotthard Base Tunnel is a railway tunnel through the Alps in Switzerland. It opened in June 2016 and full service began the following December. With a route length of 57.09 km, it is the world's longest railway and deepest traffic tunnel and... Wikipedia
Opened: June 1, 2016
Depth: 2,300 metres
Electrified: 15 kV 16.7 Hz
Highest elevation: 549 m (1,801 ft)
Line length: : 57.104 km (35.5 mi) (east tunnel); 57.017 km (35.4 mi) (west tunnel);
Location: Switzerland (Uri, Grisons and Ticino)
Lowest elevation: 312 m (1,024 ft) (south portal)