National Geographic : 1914 Aug
-1 Photo by Kolb Brothers IIOW A DIFFICULT PHOTOGRAPH IS SECURED This rather dangerous method was necessary to take the photograph on page 129, show ing one mile of trail. Two ropes are used; one tied to a log, the other given one turn around the log. The operator sits in a loop in this second rope and is lowered to a ledge below, from which point the desired view may be secured. Then he climbs the rope which is tied, and the second rope is pulled in as it becomes slack. Thus the operator can rest when he becomes tired. The ledge in this case was 55 feet below. Had anything happened, the drop would have been about 300 feet.