Hiking Highlight (Segment)
The tunnel was originally intended to discharge the waters of the Märjelensee into the valley. Originally, the waterline was on the lake side at the mouth of the tunnel and the glacier had dammed the lake so far. In the spring during the snowmelt, this stagnation then became leaky and the Mäjelensee, which erupted through the glacier, caused great damage below the glacier. The tunnel was designed to remove some of the water in time to limit the damage. Today, no more water is marveled at by the glacier melt and the tunnel serves as a footpath.
September 10, 2017
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