North America's Towering Sand Dunes | Wallpaper

This beautiful wallpaper shows Great Sand Dunes National Park and Preserve in Colorado. Alpine tundra, forests, massive dunes, grasslands, and wetlands are all protected as elements of the Great Sand Dunes natural system.



via LiveScience.com http://www.livescience.com/41450-great-sand-dunes-national-park-and-preserve-wallpaper.html