Located in southern Colorado, Great Sand Dunes National Park contains the tallest sand dunes in North America. It was designated a park in 1932, when locals, afraid they might be destroyed by mining, petitioned the government for National Park status. Still capped with snow, Tijeras Peak is a magnificent backdrop for the smooth dunes.
Yes, those are people in the photo above to give you a little sense of scale. The dunes are ever changing but are about 1,500 in height and visitors are welcome to hike up them (and slide down by renting sand boards).
The park contains several ecosystems and visitors are likely to see an abundance of wild animals. While I was there a small herd of mule deers sauntered by not 10 feet from me. We got there in the late afternoon in late April which turned out to be a wonderful time to be there. In the summer, the sand can get very hot but was comfortable to walk on barefooted for us. I didn't make it to the top (it's not that easy to walk on sand) but got about halfway up.
I've been predominantly working in black and white the last few years so this was the perfect place for me to shoot landscapes as the graphic imagery really compliments that kind of image.