Hiking Highlight (Segment)
Recommended by 320 out of 332 hikers
The tunnel was originally intended to drain the water from Lake Märjelen into the valley in a controlled manner. Originally, the water line was on the lake side at the tunnel mouth and the glacier had dammed up the lake to such an extent. In the spring, when the snow melted, this dam became leaky and Lake Märjelen erupted through the glacier, causing great damage below the glacier. The tunnel was intended to drain some of the water in time to limit the damage. Today, thanks to the melting glacier, no more water is dammed up and the tunnel serves as a footpath.
September 10, 2017
It's like a small mine. You should wear waterproof shoes and a jacket! The path is flat, but in places there is water across the whole width. In the tunnel is a Madonna statue. Stalactites on the ceiling are also interesting. The tunnel is lit, but a flashlight doesn't hurt.
August 6, 2021
Be sure to wear strong closed footwear. It is very wet on the ground.
August 25, 2019
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