I came to the dead end, and not being prepared for this I was in state of confusion for a while. I tried go down to the river, and I did find a path that had me to walk with my back bent below the bushes. That was when I recalled that the real path is walked each day by power-plant workers, so it was obvious that I was on the wrong track. Eventually I found the real path, which was on a level half-way up to the top of the gorge. And sometimes it looked like this. Completely vertical mountain walls, and the path cut out in the middle. (And for once quite a decent picture.)