KP-1099-R2 - Klamath Project. Vertical cracks, varying in width up to 3" form subterranean channels for flow of water. Approximately 1/4 sec. ft. of water is shown flowing from the crack. The top surface of the cracked material is at approximate elevation 4023. The 2" X 6" X 15" piece of wood shown gives a comparison of size; March 15, 1945; Photo by R. S. Hopkins