Geography of Switzerland

The geography of Switzerland features a mountainous and landlocked country located in Western and Central Europe. Switzerland's natural landscape is marked by its numerous lakes and mountains. It is surrounded by five countries: Austria and Liechtenstein to the east, France to the west, Italy to the south and Germany to the north. Switzerland has a maximum north–south length of 220 kilometres (140 mi) and an east–west length of about 350 kilometres (220 mi).

Switzerland is well known for the Alps in the south and south east. North of the Alps, the Swiss Plateau runs along the east–west axis of the country. Most of the population of Switzerland lives on the rolling hills and plains of the plateau. The smaller Jura Mountains are located on the north west side of the plateau. Much of the northern border with Germany follows the Rhine, though the Rhine enters Switzerland near Schaffhausen. The eastern border with Germany and a portion of Austria is drawn through Lake Constance (German: Bodensee). A portion of the southwest border with France is drawn through Lake Geneva.

Switzerland is divided into 26 sovereign cantons. The cantons along the Swiss Plateau tend to be the most populous, industrial and religiously Protestant. The cantons in the Alps tend to be less populous, Catholic, and have an agrarian or tourism-based economy.

Switzerland is divided by language as well. There are four national languages: German (spoken by 63.7% of population), French (by 20.4% of population), Italian (by 6.5%) and Romansh (0.5%). From Bern east (except in the canton of Ticino) the population generally speaks German. West of Bern, the population generally speaks French. In the southern canton of Ticino, most people speak Italian. Romansh, a group of dialects descended from Vulgar Latin, is spoken in several regions in the canton of Graubünden.

Switzerland extends between the parallels 45°49'05 and 47°48'30 lat. and the meridians 5° 57'23 and 10°29'31 long. It forms an irregular quadrilateral, of which the greatest length from east to west is 350 kilometres (220 mi), and the greatest breadth from north to south is nearly 220 kilometres (140 mi). Switzerland is a landlocked country, the closest coastline being at the Gulf of Genoa, 160 km south of Chiasso. Its political boundaries often do not coincide with those of nature. The entire canton of Ticino is south of the Alps, as are the valleys of Simplon (Valais), Mesocco, Bregaglia, Poschiavo and Müstair (all in Graubünden); except for a very small part of municipality of Stein am Rhein the whole of the canton of Schaffhausen, part of that of the canton of Basel-City, and a small part of the canton of Zürich are north of the Rhine, while the majority of Graubünden lies to the east of the Rhine basin, and Porrentruy is far down on the western slope of the Jura. Putting these exceptional cases aside, the physical geography of Switzerland may thus be described:

Putting aside the valleys of the Ticino and Inn, Switzerland may thus be described as consisting of three great river valleys (Rhône, Rhine and Aare) with the smaller one of the Thur, which all lie to the north of the main chain of the Alps and include the region between the Alps and the Jura. If matters are examined more carefully, it can be noted that the Rhône and Rhine valleys are shut off from that of the Aare (and of the Thur) by the great northern outlier of the Alps, which consists of the Bernese and Glarus Alps. Two wide and undulating valleys (Aare and Thur) and two deeply cut trenches (Rhône and Rhine) thus lie on the northern slope of the Alps, to the north and south respectively of the great northern outlier of the Alps. The main chain of the Alps rises in Swiss territory to the height of 4,634 metres (15,203 ft) in the loftiest summit or Dufourspitze (wholly Swiss) of Monte Rosa, though the Dom (4,545 metres (14,911 ft)), in the Mischabel range, is the highest mountain mass which is entirely within Switzerland. The great northern outlier attains a height of 4,274 metres (14,022 ft) in the Finsteraarhorn, while the lowest level (193 metres (633 ft)) within the Confederation, is on Lake Maggiore (on the course of the Ticino). The highest permanently inhabited village in Switzerland is Juf (2,126 metres (6,975 ft)) at the head of the high Alpine valley Avers (the Averser Rhein being a tributary of the Rhine), while the lowest is Ascona (196 metres (643 ft)), on Lake Maggiore.

Different geological phenomena shaped the actual landscapes of Switzerland. The Alpine orogeny had the most visible effects on the landscape: this term covers entire geological movements contributing to the Alps’ formation.

A crystalline basement formed at the beginning of the Paleozoic era, between 540 and 360 million years ago. Later, between 205 and 96 million years ago, the alpine ocean or Tethys Ocean formed between Eurasia and Africa. The ocean reached its maximum width at the end of Jurassic period, 135 million years ago. The collision between the Eurasian and African plates made it progressively disappear. This plate collision (still in progress) began 100 million years ago. The Alps resulted from this geological movement, the two plates creating folding zones. The Central Plateau is mainly composed of molasse, a sedimentary rock that formed at the bottom of the Tethys ocean.