Lac de Vallon is a lake at Bellevaux in the Haute-Savoie department of France. The lake formed in 1943 when a landslide blocked the course of the Brévon river.
Wikipedia https://en.wikipedia.org/wiki/Lac_de_Vallon
Address 74470, France
Coordinates 46°12'57.712" N 6°33'33.957" E
