The lake's name is derived from the German word 'Mummeln', a historical term for water lilies.
It is one of only seven remaining cirque lakes in the Black Forest region.
The water level is strictly regulated and remains constant regardless of precipitation.
Geologically, the lake sits in a deep basin carved by glacier erosion during the last ice age.
The site features a permanent outdoor art exhibition known as the 'Kunstpfad am Mummelsee' (Art Path).
Mummelsee is a glacial cirque lake located at an elevation of 1,036 meters within the Northern Black Forest in Germany. Measuring approximately 3.7 hectares in surface area, it reaches a maximum depth of 18 meters. The lake is situated directly along the Black Forest High Road (Schwarzwaldhochstraße). It is fed by groundwater and features a perimeter walking path of roughly 800 meters. The surrounding landscape consists of dense coniferous forest and the slopes of the Hornisgrinde, the highest mountain in the Northern Black Forest. The site remains a popular destination for hikers exploring the surrounding trail network. The lake basin formed during the Würm glaciation period.
The wooden jetty near the hotel entrance provides the most unobstructed view across the water toward the forest-clad hills.
Wear sturdy, waterproof footwear if you plan to extend your walk into the connecting forest trails.
The perimeter path is paved and accessible for visitors with limited mobility.
Wind speeds can be significantly higher at this elevation than in the surrounding valleys, so bring an extra layer.
Do not attempt to swim in the lake, as it is prohibited to preserve the ecosystem.
Stay on marked paths to protect the sensitive flora and fauna of the forest surrounding the lake.
