Mojave National Preserve is a US National Preserve located in the Mojave Desert of San Bernardino County, California, between Interstate 15 and Interstate 40. Established in 1994, it is the third largest unit of the National Park system within the contiguous United States, and the largest national preserve.
The preserve spans 1,542,776 acres (6,243Â km). It surrounds Providence Mountains State Recreation Area and Mitchell Caverns Natural Preserve, which are both managed by the California Department of Parks and Recreation.