Hiking Highlight (Segment)
Recommended by 39 out of 40 hikers
The tunnel is about 1 km long and without light. Short of the northern exit is a kink, so that its incidence of light is only relatively late visible. We went this way without a flashlight. A very interesting experience.
March 28, 2017
The Suonen tunnel is 1.6 km long and not illuminated. An interesting cool experience! Highly recommended!
July 22, 2020
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