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