Col du Galibier in the context of "Mountain pass"

A tunnel is an underground or undersea passageway. It is dug through surrounding soil, earth or rock, or laid under water, and is usually completely enclosed except for the two portals common at each end, though there may be access and ventilation openings at various points along the length. A pipeline differs significantly from a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods.

A tunnel may be for foot or vehicular road traffic, for rail traffic, or for a canal. The central portions of a rapid transit network are usually in the tunnel. Some tunnels are used as sewers or aqueducts to supply water for consumption or for hydroelectric stations. Utility tunnels are used for routing steam, chilled water, electrical power or telecommunication cables, as well as connecting buildings for convenient passage of people and equipment.

Monte Viso or Monviso (Italian: [moɱˈviːzo]; Occitan: Vísol [ˈvizul]; Piedmontese: Brich ëd Viso [ˈbrik əd ˈvizʊ] or simply Viso) is the highest mountain of the Cottian Alps, located in Piedmont, Italy, close to the French border. Monte Viso is well known for its pyramid-like shape. Because it is higher than all its neighbouring peaks by about 500 m, it can be seen from a great distance, including from the Piedmontese plateau, the Langhe, the Theodulpass in the Zermatt ski area, the Col du Galibier and the summits of the Mont Blanc massif. On a very clear day, it can be seen from the spires of Milan Cathedral.

It has been suggested that Monte Viso could be one of the mountains which inspired the Paramount logo, even though the company has denied the claims. In Italy it is also known as il Re di Pietra ("the Stone King") because of its prominence within the western Italian Alps. It was declared a cross-border UNESCO biosphere reserve in 2013.The longest river of Italy, River Po, is born at the mountain's foot.

Col du Télégraphe is a mountain pass in the French Alps situated above the Maurienne valley between the eastern end of the massif d'Arvan-Villards and the massif des Cerces.

The pass links Saint-Michel-de-Maurienne to the north and Valloire to the south, as well as forming an access point to the col du Galibier via its north face.

Grand Galibier (3,228 m) is a mountain of the Cottian Alps in Savoie, France.

It is the highest mountain of the Massif des Cerces, a small chain of mountains located about 20 km northwest of Briançon, deep in the heart of the French Alps. It is most famous for giving its name to nearby Col du Galibier, a classic Tour de France climb, which lies on the mountain's shoulder, several hundred metres underneath its summit. The area around the mountain is also popular for hiking and mountain climbing.