Now it was time to go to the greatest of them all (yes, pun intended). Great Sand Dunes National Park and Preserve in Colorado has the tallest dunes in the United States.
The park itself is at an elevation of over 8,000', and in the mountains, so I wasn't quite sure what to expect.
Medano Creek is one of the few places in the world that has "surge flow", where the water pulses and makes little waves. Tickles...
Note to my brother John: Sorry, no dune buggies or ATVs allowed on these dunes. I guess you'll just have to stick to Oregon.
More pics of Great Sand Dunes NP