Kelso Dunes, also known as the Kelso Dune Field, is the largest field of aeolian sand deposits in the Mojave Desert. The region is protected by the Mojave National Preserve and is located near the town of Baker, San Bernardino County, California, and the Preserve Visitor Center. The dune field covers 45 square miles (120 km²) and includes migrating dunes, vegetation-stabilized dunes, sand sheets, and sand ramps. The tallest dunes rise up to 650 feet (200 m) above the surrounding terrain.