Lac de Joux
Lake Joux, in the heart of the Vaudois Jura, is the largest lake in the entire Jura massif. In winter, it turns into the largest natural ice rink in Europe and in summer it attracts sports fans and lovers of nature.
Lake Joux (1,004 m), together with Lake Brenet and Lake Ter, is situated between the Risoud mountain chain and the Mont Tendre massif (1,679 m). Its surface covers 9,5 square km. It is fed by the rivers Orbe and Lionne, whose waters mostly infiltrate into the chalky depths of the lake and flow out at the caves of Vallorbe.
The lake freezes over in winter and transforms into a gigantic natural ice rink in the centre of a network of cross-country and snowshoeing slopes. Its ice used to be exported to restaurants and hospitals in the plain and abroad.