Cerro Cabrillo, Mountain summit in Morro Bay State Park, California, United States.

Cerro Cabrillo is a rhyodacite volcanic plug in eastern Morro Bay State Park, one of the Nine Sisters. Its east face bears Tiki Rock, a formation resembling a Polynesian tiki carving. The slopes carry chaparral and coastal sage scrub, including Deer Weed, Soap Plant and Chaparral Checkerbloom.

Cerro Cabrillo is a volcanic plug of rhyodacite, formed when magma solidified beneath softer rock that has since eroded away. It is one of the Nine Sisters, a chain of nine volcanic landmarks between Morro Bay and San Luis Obispo that includes Morro Rock and Hollister Peak. The peak was named after Juan Rodríguez Cabrillo, the Spanish explorer who sailed along the California coast in 1542.

The summit is named after Spanish explorer Juan Rodriguez Cabrillo, and hikers can spot Tiki Rock along the way, a natural stone formation that resembles Polynesian carvings.

Trailheads for the hike and climbs are in Morro Bay State Park, with a common start from South Bay Boulevard. The route is rocky and steep in places and exposed to the sun, so wear sturdy shoes and carry water. The east face holds Tiki Rock, a formation resembling a Polynesian tiki carving.

The mountain hosts uncommon plant species including Deer Weed, Soap Plant, and Chaparral Checkerbloom that thrive in its volcanic habitat. These plants have adapted to the dry conditions and rocky environment found at this elevation.