The Forest of Nisene Marks State Park is a state park of California, United States, protecting a secondary forest in the watershed of Aptos Creek and Soquel Creek within the Santa Cruz Mountains. It is located outside Aptos, California, and contains over 40 miles (64 km) of hiking trails and fire roads through 10,223 acres (4,137 ha) of variable terrain.

The Santa Cruz Mountains are a mountain range in central and Northern California, United States, constituting a part of the Pacific Coast Ranges. They form a ridge down the San Francisco Peninsula, south of San Francisco. They separate the Pacific Ocean from the San Francisco Bay and the Santa Clara Valley, and continue south to the Central Coast, bordering Monterey Bay and ending at the Salinas Valley. The range passes through the counties of San Mateo, Santa Clara, and Santa Cruz, with the Pajaro River forming the southern boundary.