Castle Mountains National Monument
San Bernardino County, United States
Castle Mountains National Monument is a U.S. National Monument located in the eastern Mojave Desert and northeastern San Bernardino County, in the state of California. The park protects 20,920 acres, located between the interstates I15 and I40, and northwest of the Colorado River.
Monument data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).