Castle Mountains National Monument is a National Monument in California. The NPS currently lists 2 active alerts, 0 campgrounds and 0 visitor centers, and no entrance fee.
Red Rocks Outcropping · Photo: NPS Photo (via nps.gov)
About the park
“Castle Mountains represents some of the most unique elements of the Mojave Desert. Nestled between the Nevada state line and Mojave National Preserve, the nearly 21,000 acres of Castle Mountains boasts Joshua tree forests, unbroken natural landscapes, rare desert grasslands, and rich human history.”
Active alerts
2
Closures
0
Campgrounds
0
Visitor centers
0
Current alerts and closures
2 active NPS alerts as of Oct 28, 2026: 0 closures, 0 danger, 1 caution and 1 information.
Caution
Most Monument Roads Require Heavy Duty 4WD Vehicle to Travel Safely
Breaking down in the remote monument can be a life-threatening emergency. Most roads require a well-equipped, heavy-duty 4WD vehicle to travel. 2WD high clearance vehicles must use Walking Box Ranch Rd for entry and exit. No Visitor Facilities Available.
This site has no entrance fee, according to NPS fee data.
Things to do
Activities the NPS lists for Castle Mountains.
CampingCar or Front Country CampingGroup CampingRV Camping
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Operating hours
Castle Mountains National Monument is open year-round. There are no facilities in the Monument. Visitor Centers in neighboring Mojave National Preserve provide information and orientation.
Castle Mountains
Day
Hours
Monday
All Day
Tuesday
All Day
Wednesday
All Day
Thursday
All Day
Friday
All Day
Saturday
All Day
Sunday
All Day
Weather: Weather at Castle Mountains changes with the seasons. Freezing temperatures are expected in winter, with occasional snow. Spring brings mild warm days and cooler nights.
Data: National Park Service (NPS) Data API, U.S. Department of the Interior (developer.nps.gov). This product uses the NPS Data API but is not endorsed or certified by the National Park Service. The National Park Service and the U.S. Department of the Interior do not endorse OpenParks. Photos are NPS images shown with their original credits; park descriptions are short excerpts credited to the NPS. Always confirm current conditions on nps.gov before you travel.