The 1.4 million acres between
Interstate 5 and I-40 in southeastern California was designated by Congress as a national preserve in 1994 in order to protect the prehistoric, historic, and natural resources found in the region. Elevations range from less than 1000 feet to more than 800, and the terrain ranges from mountains to sand dunes. Indian rock art includes petroglyphics more than 10,000 years old while evidence of more recent human activity, particularly mining and cattle ranching, remains as well.
