Briones Regional Park 
2537 Reliez Valley Rd.
Martinez, CA 94553
888-327-2757
http://www.ebparks.org/parks/briones
Park: Hike, Horse, Picnic, Walk
With its rolling, grassy hills and secluded, shady canyons, Briones Regional Park is a secret wilderness surrounded by the towns of central Contra Costa County. Operated by the East Bay Regional Park District.