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Alpine Tunnel is a 1,772 ft (540 m) narrow gauge railroad tunnel located east of Pitkin, Colorado, on the former Denver, South Park and Pacific Railroad route from Denver to Gunnison. At an elevation of 11,523 feet (3,512 m), it was the first tunnel constructed across the Continental Divide in Colorado and was the highest railroad tunnel in ...
Gotthard Road Tunnel (road tunnel, 16.9 km) Ceneri Base Tunnel (railway tunnel, 15.4 km) Furka Base Tunnel (narrow gauge railway tunnel with car transportation, 15.4 km) Gotthard Railway Tunnel (railway tunnel, 15.0 km) Lötschberg Tunnel (railway tunnel, 14.6 km) Zimmerberg Base Tunnel (railway tunnel, 9.4 km) Seelisberg Tunnel (road tunnel, 9 ...
As time went on the Alpine passes were improved to make travel easier. A few passes (e.g. the Semmering , the Brenner, the Col de Tende and the Arlberg ) had carriage roads constructed before 1800, while those over the Umbrail and the Great St Bernard were not completed till the early years of the 20th century.
This is the deepest point of the tunnel, with a rock layer of 2,450 m (8,040 ft) above it. The tunnel then passes below the valley of the Rein da Medel (Val Medel) and west of Lai da Sontga Maria. After a few kilometres the tunnel crosses the watershed between the Anterior Rhine and the Ticino, just north of Pizzo dell'Uomo (2,525 m (8,284 ft)).
The Ceneri Base Tunnel was opened on 3 September 2020 and became fully operational in December 2020 and is an important feeder for the Gotthard Base Tunnel. [4] A decision to fully complete the second tube of the Lötschberg Base Tunnel was made in early-2024, with an estimated cost of CHF 1.7 billion [ 5 ] and construction expected to extend ...
The Alpine Initiative "for the protection of the Alpine region from transit traffic", which raised barriers against road tunnel construction, was initially blocked by the Swiss Parliament. A February 1994 Alpine Initiative passed (with 52% of the vote), and Parliament upheld the referendum twice through the 1990s.
Because of the danger, tourists are unable to leave the visitor facilities on the Midi's summit. However, mountaineers and skiers can pass through a tunnel to reach the steep and extremely exposed ice ridge to descend to the glacier below. [7] In December 2013, a glass skywalk called "Step into the Void" opened at the top of the Aiguille du ...
The best-known mountain pass road of the High Tauern is the scenic Grossglockner High Alpine Road inaugurated in 1935, including a tunnel at an elevation of 2,505 metres (8,219 ft) under the Hochtor Pass (2,573 metres (8,442 ft)).