Page "Röstigraben" Paragraph 8

Geographically the line stretches from the Jura Mountains ( Canton of Jura and Bernese Jura ) in the north along Lake Biel, Lake Neuchâtel and Lake Murten through the Swiss plateau, then crosses the Swiss Alps and the Rhone valley, separating Lower and Upper Valais, and finally reaches the Italian border between the municipalities of Evolène and Zermatt.

Folklorists lay emphasis on the importance of the parallel Brünig-Napf-Reuss line further in the east, separating the historic Alemannic and Burgundian spheres of influence.