Schwendisee

Schwendisee is a small lake above Wildhaus on the slopes of the Churfirsten, in Toggenburg, Canton of St. Gallen, Switzerland. Besides the main lake (Vorderer Schwendisee), there is a smaller lake nearby (Hinterer Schwendisee).
Sediment cores from the lakes have been studied and provide a record of the climate of the last 600 years.