Bernese Alps through which the Rhône finds its way to Lake Geneva, to the Grimsel Pass or, depending on the definition, to the river Reuss (thus including the Uri Alps). The principal ridge, a chain that runs from west (Dent de Morcles) to east (Sidelhorn), whose highest peak is the Finsteraarhorn, forms the watershed between the cantons of Bern and Valais. Except for the westernmost part, it is also the watershed between the Rhine (North Sea) and the Rhône (Mediterranean Sea). This chain is not centered inside the range but lies close (10 to 15 km) to the Rhône on the south.
Chensagi River West mid-May, however, safe ice circulation is generally from mid-November to mid-April. The main hydrographic slopes near the Chensagi West River are: The Chensagi River originates at the mouth of a small unidentified lake (length: ; altitude: ). The mouth of this head lake is located at: From the mouth of the head lake, the "Chensagi River West" flows over according to the following segments: The "West Chensagi River" flows on the north bank of the Chensagi River which generally flows southwestward across Chensagi Lake to a bay in the northwest of Lake Maicasagi. The latter in turn flows Southwesterly through