I started climbing when I was about 14 years old during summer camp.
One of the "cool" instructors took me out to a long cliff (about 1/2-mile long) with a 40-50 foot cliff face. We played a game where we would walk along the base with our eyes closed; where ever we would stop is where we would climb up to the top.
Then we down-climbed and repeated the "game" over and over as we made out way down the cliff.
In later years, once I started getting into climbing for real, we did girdle traverses of the long face.