Red Rocks Amphitheatre, Rock formations, Rocks, Red Rocks Park (Jefferson County, Colo.), Hills, Mountains, Shadows, Clouds, Amphitheaters, Parks, and Boulders
Valleys, Hills, Mountains, Lost Mine Trail (Big Bend National Park (Tex.)), Trees, Canyons, National parks & reserves, Big Bend National Park (Tex.), Cli...
Petrified Forest National Park (Ariz.), National parks & reserves, Deserts, Valleys, Hills, Blue Mesa (Ariz.), Rivers, Mesas, Petrified forests, Erosion,...