Small lake at an altitude of 2235m, in a former glacial cirque between Corno Stella and Monte Toro. I also recommend the other lakes (Montebello, Foppe, Trote) reachable through the Valcervia Pass.
The Tartano pass is a scenic Alpine pass between the province of Bergamo and Valtellina. It offers spectacular views of the Bergamo Orobie and the Valtellina ones.
The route to reach the pass starting from San Simone is easy.