Mount Diablo State Park, one of the largest parks in the Bay Area, offers hiking, biking, horseback riding and camping.
From the Mitchell Canyon entrance, park visitors can hike 3.7 miles to Deer Flat, or to the summit (6.8 miles) by way of Juniper Camp.
The Mitchell Canyon Interpetice Center is located at the Mitchell Canyon entrance. The center, staffed by volunteers, displays geology, wildlife, trails and plant life. There's also a gift shop.