Rhône River Crossing Swiss Alps46.6N 7.8E
Lake Thun is an Alpine lake in the Bernese Oberland in Switzerland. It took its name from the city of Thun, on its northern shore. It is drained by the River Aar and fed by water from Lake Brienz and various streams.
Lake Brienz is located in the Canton of Berne in Switzerland. The lake took its name from the village Brienz on its northern shore. Interlaken and the villages Matten and Unterseen lie to the south west of the lake.