This 277-acre oak/bay parkland preserves the habitat of the extremely rare Alameda manzanita as well as other indigenous plant and animal species. A staging area at the end of Coach Drive serves as the trailhead for a two-and-one-half mile trail system that leads to ridgetop vistas of San Pablo and Richmond Bays, Mt. Diablo, and Mt. Tamalpais. For park information, telephone toll free: 888-EBPARKS (888-327-2757), option 3, ext. 4534.
From the Richmond/Oakland area:: Take I-80 to the San Pablo Dam Road exit in Richmond. Turn south on San Pablo Dam Road and proceed through El Sobrante to Castro Ranch Road. Turn left on Castro Ranch Road, left on Conestoga Way, left on Carriage Drive, and right on Coach Drive. The entrance is at the end of Coach Drive.
http://www.tripleblaze.com/trail.php?c=3&i=7160