American South West
Great sand dunes national park and preserve - extensive dunes of pure golden sand rising 700 feet above the flat san luis valley in south colorado, beneath the sangre de cristo mountains
http://www.americansouthwest.net/colorado/great_sand_dunes/national_monument.html
Great Sand Dunes Kaart
Great Sand Dunes Kaart
http://www.lib.utexas.edu/maps/national_parks/sand94.jpg