The Kelso Dunes are among only a handful of dunes worldwide known to "boom". The shifting sand, sliding down the slopes of the dunes, causes the dune to resonate, like an instrument. The low, rumbling sound resembles distant thunder.
After checking the weather again this morning, we decide to head down to Joshua Tree National Park in southeastern California. The route down from Las Vegas takes us through the Mojave desert. It's a beautiful, white desert, and a forest of Joshua trees lines the road. Occasionally the lower sections of the road are filled with mud from recent flash flooding.