A sprawling 4,700 acre park in Eastern Contra Costa County with trails for hiking or horseback riding, picnic areas and camp sites for reservations.
This state park encompasses Mt. Diablo, the giant mountain in the center of Contra Costa County. Park features include trails for hiking, biking, or horseback riding, picnic areas, camp sites and much more.
A large wilderness park operated by East Bay Regional Parks. Activities include hiking trails, picnicking and camping.