Swiss Plateau
The Swiss Plateau extends from Lake Geneva on the French border across central Switzerland to Lake Constance on the German and Austrian borders. In the north and northwest, the Swiss Plateau is sharply delimited geographically and geologically by the Jura Mountains. In the south, there is no clear border with the Alps. Usually, the rising of the terrain to altitudes above 1500 metres, which is very abrupt in certain places, is taken as a criterion for delimitation. The plateau has an average altitude of . Even though the Swiss Plateau forms a basin, it is by no means a flat territory and it is covered with rolling hills, lakes and rivers. Most of Switzerland's large lakes are located in the plateau. Both Lake Geneva () and Lake Constance () are located in the plateau but are shared with other countries. The largest lake totally in Switzerland, Lake Neuchâtel (), is located in the Swiss Plateau.