Devil's furrow

Čertova ryha is a deep rock cut through which the road leads from Krupka-Grunt to the mountains. Its beginning can be found about 120m NW from the end of the Krupská part, locally called Grunt, where the road immediately begins to cut into the Rock, with sides over 2m high in places. The rock notch itself is about 50m long, with quite considerable variability of the notch itself, from the already mentioned more than two meters to barely a few tens of centimeters. Next, the road…