Lake Thunersee Alpine Resort Poster
The Thunersee is a alpine lake in Bernese the upper country at the northern alpine edge. The lake is 17.5 km long and max. 3.5 km broad. After the last ice age, where today two lakes lay, the spiral lake in such a way specified formed . By deposits of Geschiebe of the different mountain brooks approximately one level in the center of the lake, formed, on which today the municipalities intersheets , mats and Unterseen lie. This washing level divided the lake into the Thuner and the Brienzersee.