The dune field covers 45 square miles and is the largest field of eolian sand deposits in the Mojave Desert. The Kelso Dunes includes migrating dunes, vegetation-stabilized dunes, sand sheets, and sand ramps. Mojave desert, San Bernardino County, California, USA. .© febr. 25 2007 Marco van Middelkoop/Aerophoto-Schiphol