Erosion caused by the flood of December 1966 in Outlet Canyon, Kaibab Plateau. Grand Canyon National Park, Coconino County, Arizona. Circa 1966.

Album caption and index card: Erosion caused by the flood of December 1966 in Outlet Canyon, Kaibab Plateau. Renewed arroyo cutting in Outlet Canyon between a point about 0.50 mi (0.8 km) downstream from the Point Sublime Trail and the edge of the plateau; the cutting deepended the old channel 1-2 ft (0.3-0.6 m). Grand Canyon National Park, Coconino County, Arizona. ca. 1966. Published as Figure 21 in U.S. Geological Survey. Professional Paper 980. 1977.