Funtensee is a stunning lake located in Berchtesgaden National Park, Bavaria, Germany. It's uniquely situated at an elevation of 1601 meters and is known for its remarkable cold temperatures, with records dropping as low as -45.9°C. In the summer season, visitors can enjoy hiking around the surrounding mountains and exploring the Kärlinger Haus mountain hut which is located on the lake's shore. Funtensee is also noteworthy for being a karst lake, with its outflow toward the Schrainbach being completely underground at a location called Teufelsmühle. Visitors will find plenty to explore and appreciate among the tranquil landscapes of this unforgettable destination.