From as high as 10 stories. THAT was easy because we always went down conventionally. With doing that, you are focused on where you are on the wall, while looking at the wall and what you are doing with your hands. In no time, you are much lower and then on the ground. BUUUUT......For sheets n giggles, while I was in the USAF, I went face down off a 40 ft cliff at Percy Priest Lake in Nashville. My Bud was from there so we drove over from Arkansas one day in June 1989. He was a Certified Instructor. At first it was weird. Just keep that belay line tight and all is well.
