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