Growing up in the Midwest I imagined all deserts looked like Kelso Dunes. 2 hours south of Las Vegas at Mojave National Preserve sits 45 square miles of dune fun. A 3-mile roundtrip takes you to the top of the sand dunes and back to the trailhead. It's a lot tougher going up. You can run or slide down. The hike has no shade, cover up!