Castle Rock State Park is a land of sculpted sandstone, lush forests, and sweeping vistas. From one of the highest ridges in the Santa Cruz Mountains, park visitors enjoy hiking, backpacking, and horseback riding. Rock climbers explore the park's caverns and rocks, including the namesake Castle Rock. Plant-lovers come for California black oaks, knobcone pines, and high-elevation coast redwoods. The park’s 34 miles of rugged trails conveniently connect to an extensive trail system that links the Santa Clara and San Lorenzo valleys to nearby Big Basin Redwoods State Park and open space preserves on the Skyline to the Sea Trail.

The Castle Rock Trail Camp is open year round on a first-come, first-serve basis. The campground is a 2.5 mile (4 kilometer) hike from the parking area and you will have to carry all of your equipment into the camp. Castle Rock Trail Camp has trash receptacles, bathrooms, and 20 campsites with picnic tables and fire rings. Wood is available for sale during the wet season. Fires are not allowed during fire season.

To register and pay your fees, check in at the Entrance Station at the Castle Rock parking lot. If you arrive when the station is not staffed, you can use the self-registration envelopes. Make sure you bring exact change or a check to use in case you must use the self-registration. Place your receipt on the dashboard in a visible place as proof of payment. Rangers will verify payment. For more information about camping and fire closure dates, please call Castle Rock State Park at (408) 867-2952. For more information and reservations for Waterman Gap Trail Camp, please visit the Santa Cruz Mountain State Parks Backcountry Trail Camp Page.