Canyons, Erosion, Cliffs, Granite Gorge (Ariz.), Grand Canyon National Park (Ariz.), Buttes, Tree limbs, National parks & reserves, Grand Canyon (Ariz.),...
Canyons, Cliffs, Black Canyon of the Gunnison National Park (Colo.), Trees, Mountains, Rock formations, Black Canyon of the Gunnison (Colo.), and Rivers