The Mojave Desert is a big place – 47,877 square miles, primarily in southeastern California and southern Nevada. In a series of posts I will explore just the Mojave National Preserve, which, at 2500 square miles, is big enough in its own right. It is the third largest unit of the National Park System in the contiguous United States. In fact, in my week-long stay in the Preserve, I was only able to visit a few of the many interesting areas. Here I will focus on the Kelso Dune Field.