Road to the start of the klettersteig is very small (only one car can pass at a time, limited visibility). Parking for limited number of cars only (max 10 if I remember correctly), but no worries, even in high summer, not many people do this trail since it is not so close to the more popular hotspots in the neighbourhood. Nice tour. We did it with 2 teens (16 and 17). Not difficult. I woud not recommend to do it in humid weather: some parts of the trail are kind of slippery. Nice views over the artificial lake. Most suitable place to eat your picknick is right after the suspension bridge, near the edge of the pine woods.