Dumont Dunes is an area of the Mojave Desert containing large sand dunes, located approximately 31 miles north of Baker, California on California State Route 127. Bordered by steep volcanic hills and the slow running Amargosa River, the region is easily recognized from a distance by its distinctive sand dunes. The elevation here varies from 700 feet, at the river, to 1200 feet at the top of Competition Hill, the tallest of the dunes.