Montaña de Oro is a state park in California, United States. The park is located six miles southwest of Morro Bay and 2 miles south of Los Osos. The name "Mountain of Gold" comes from the golden wildflowers found in the park. It has 8,000 acres (32 km²) of cliffs, sandy beaches, coastal plains, streams, canyons, and hills, including the 1,347-foot (411 m) Valencia Peak.