ARTISTIC PHOTOS Dunes and reflection. (Scenic360)Great Sand Dunes National Monument. (Dunes125)Great Sand Dunes National Monument. (Dunes152)Windswept sand of Killpecker Dunes in Wyoming's Red Desert. (RedDesert011)Great Sand Dunes National Park. (Scenic096)American coots landing in water. (WaterFowl049)Great Sand Dunes National Monument. (Dunes168)Wheeler geologic area is formed by erosion of volcanic tuff and ash. San Juan Mountains at the edge of the San Luis Valley. (Dunes025)Water flowing through Great Sand Dunes National Monument. (Dunes159)Autumn branches. (Dunes114)Great Sand Dunes National Park. (Dunes127)Ducks taking off at sunrise. (Waterfowl141)Aerial of Cotton Lake. Dry wetland on Medano Ranch, Great Sand Dunes National Park, San Luis Valley. (Dunes092)Sunflowers growing on sand dunes. (Dunes014)Great Sand Dunes National Park. (Dunes126)Sunrise over Great Sand Dunes National Park, San Luis Valley. (Dunes012)People hiking in Great Sand Dunes National Park, San Luis Valley, Colorado. (Dunes032)Great Sand Dunes National Park. (Dunes129)Lenticular clouds over Devil's Head. (120115-6089)Sunset and prairie sunflowers (Helianthus petiolaris), Great Sand Dunes National Park. (Dunes007)Great Sand Dunes National Monument. (Dunes151)Abstract sunset reflection. Alaska (150803-1170965)Cumulus clouds. (080725-00292)Greater sandhill cranes leave night roost as sun rises through fog. Monte Vista National Wildlife Refuge, San Luis Valley, Colorado. (Dunes011)Coyote tracks and prairie sunflower at Great Sand Dunes National Park, San Luis Valley, Colorado. (Dunes080)Fall aspen leaves float on top of a calm pool of water. San Luis Valley, Colorado. (Scenic187)Blowing sand, Great Sand Dunes National Park, San Luis Valley. (Dunes030)Water fowl. (Dunes049)Prairie sunflowers (Helianthus petiolaris) growing at Great Sand Dunes National Monument. (Dunes160)Great Sand Dunes National Park. (Dunes131)Great Sand Dunes National Monument. (Dunes164)Abstract sunset reflection in water. Alaska. (140902-6425)Great Sand Dunes National Monument. (Dunes135)Great Sand Dunes National Park. (Dunes128) PHOTO LIBRARY MENUMENUAERIALS / FLORA / SCENICSAMPHIBIANS / REPTILESARTISTIC PHOTOS / PEOPLE / STRUCTURES / TRANSPORTATION Artistic PhotosBuildings / StructuresOutdoor ProfessionalsPeopleTransportation BIRDSBUGS / INSECTS / SPIDERSMAMMALSMARINE LIFEPLACESURBAN WILDLIFE