“I think I will still often go to Lake Lauenen!", as the lyrics of the well-known song of the band Span go. Lake Lauenen is nestled in unique natural surroundings. Set against a backdrop of sheer rock faces and high waterfalls, it is facing the open Lauenental valley. Lake Lauenen is a very shallow lake. Most of it is not over 2 metres deep. This means that there is a risk of it silting up, which is demonstrated by a reduction in the water surface due to the plants growing there.
This process is carefully monitored, so that countermeasures can be taken in good time. Sucking up some of the material from the lake bed is also being discussed.