Dark mine

Temný důl is a deeply incised valley falling steeply from the sharp bend in the road above the Starý Martin tunnel to Lesní pramen in the Horské potok valley. A small stream flows through the valley, which, however, turns into a wild stream during the spring thaw or torrential rains. On both sides, the highest levels of the valley are lined with the so-called Krup Walls. In the upper part of the valley there is a ruin called U charodějnice. It's about…