|Location:||(47° 00' 28" N, 6° 54' 20" E/47.0077,6.9055)|
|Address:||Gorges du Seyon, Tel: +41-, Fax: +41-,|
|As far as we know this information was accurate when it was published (see years in brackets), but may have changed since then.
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The Gorges du Seyon is a Klus of the Jura. The Jura is formed by folds with the axis running southwest to northeast. As a result there are valley and mountains ridges running in the same direction. Rivers draining to the north or south have the problem to cross the mountain ridges or anticlinals. Some do this underground, as the area is karstified, others have cut deep gorges into the mountain ridges whch cross the ridge to the next parallel valley. This are the gorges called Klus.
The Seyon river emerges in a small karst spring near Villiers on 830 m asl. Near Valangin the river crosses the southern ridge of the Jura in a gorge which ends in Neuchâtel. Numerous floods, which damaged the city Neuchâtel made a tunnel necessary which drains the river from here directly into the Neuchâtel lake.