Lake Mummelsee, located along the Black Forest High Road scenic route, is the largest of seven mountain lakes remaining in the Black Forest. Perched 3,400 feet (1,036 meters) above sea level, the lake gets its name from the white water lilies, called ‘mummel’ in German, than float on its surface.
According to local lore, a bevy of water sprites live with their king in a glorious crystal palace far below the surface of the water, coming out only at night to dance in the moonlight. Mermaids aside, Lake Mummelsee is circumnavigated by a boardwalk for lakeside strolls, while paddle boats ply the surface. A short trail leads up to a lookout tower atop Hornisgrinde, the highest peak in the area, where visitors can take in panoramic views of the Black Forest.
Lake Mummelsee is located along B500 between the villages of Unterstmatt and Ruhestein.