Black Diamond Mines Regional Preserve

The East Bay Regional Park District began acquiring land for Black Diamond Mines Regional Preserve in the early 1970s.

Black Diamond Mines Regional Preserve

Black Diamond Mines Regional Preserve California mountains, Antioch, Black diamond

Black Diamond Mines Regional Preserve, Antioch, California Stock Photo - Alamy

File:Black Diamond Mines Regional Preserve - Rose Hill Cemetery - panoramio (2).jpg - Wikimedia Commons

10 Best Trail Running Trails in Black Diamond Mines Regional Preserve

Black Diamond Mines Regional Preserve - Rose Hill Cemetery above Somersville townsite. Winter 2015. Photo by Naturalist Eddie Willis.

Black Diamond Mines Regional Preserve, Antioch, California Stock Photo - Alamy

Entrance to Black Diamond Mines, Morning light at Black Dia…

Black Diamond Mines Regional Preserve

Black Diamond Mines Regional Preserve