Title: Valley of the dunes
Subjects: Description and travel, Landscape, Natural history, Pictorial works, Subjects & Themes - Travel - U.S./West, United States - Mountain - Colorado, Parks & Campgrounds, Nature Photography, Travel - United States, Travel, Colorado, Great Sand Dunes National Park, Landscapes
Places: Colorado, Great Sand Dunes National Park, Great Sand Dunes National Park (Colo.)