by burtkauf | Sep 5, 2014 | Antioch, Black Diamond Mines, CA, Clayton
Beautiful rolling hills of Antioch’s Black Diamond Mines. Also, approachable from the back side, Clayton Blvd. near Concord, one can hike (or bike) up roughly three miles or take Hwy 4 to Antioch and the front entrance off Sommersville Rd. Be...
