Mitchell Creek ParkMitchell RockContra Costa CountyClayton Community BallfieldsClaytonRussellmann ParkClayton Valley Center ParkRansom PointBrazil Quarry ParkArbolado ParkNorth GateNewhall Community ParkCastle Rock ParkDiablo Shadows ParkMount Diablo State ParkNortonvilleLime Ridge Open SpaceCivilian Conservation Corps Cultural PreserveWall PointShell Ridge Open SpaceConcord Boulevard ParkMarkham Nature AreaSomersvilleRock CityEl Divisadero ParkConcord Community ParkMarsh Creek SpringsStewartvilleDiabloWaldonAlamo OaksConcordContra Costa CentreWalnut HeightsPleasant HillWalnut CreekAlamoWest HartleyBlackhawkDanville