Swamps, pine forests, small lakes formed by old glaciers and the special, diverse moorland wildlife make for a unique atmosphere around San Bernardino in the highest part of the Val Mesolcina. The two lakes of Lago d'Isola and Lagh Doss are popular among water sports enthusiasts and bathers.
The landscape at the San Bernardino pass is characterised by a mysterious moorland with sparkling pools and polished glacial rocks. The pass road runs alongside these small lakes until the valley slope to San Bernardino and Lago d'Isola. Formed by a dam in the River Moesa and surrounded by forests, the lake is a paradise for active people, rowers and windsurfers as well as fans of rope parks and Tyroliennes – this one stretches 150m across the lake.
Lagh Doss, also in the south of the village of San Bernardino, is a small postglacial moorland lake embedded in a peat basin and surrounded by a sparse mountain forest. Set in this idyllic location, the lake reaches a temperature of just under 20 °C in summer and is certainly suitable for bathing (on a small beach including pedalo hire).