At the feet of Schesaplana, the highest mountain of Rätikon, Austria, and 1970 meters above sea level, Lünersee is one of the biggest natural mountain lakes of Alps. Construction works between 1920 and 1959 made it a part of a pumped storage hydroelectric scheme.
The lake is accessible via a steep ascent on partially secured trail, or, comfortably, by a cable car. Its surroundings make a paradise for hikers, climbers as well as fishermen. And for photographers, of course :)