SOMERSVILLE TOWNSITE Black Diamond Mines Regional Preserve is a stunning park today, but in the 1860s its coal fueled California's early industrial development. Watch segment 1 of our 16-part series about "the rocks, the mines, and nature's remarkable recovery." Follow us to enjoy a new Bay Area adventure every week.

Presented by Save Mount Diablo in partnership with Mount Diablo Interpretive Association. Produced by Joan Hamilton.

Featuring Seth Adams, Kevin Dixon, Robert Doyle, Scott Hein, Heath Bartosh, Ken Lavin, and Ray Sullivan. Special thanks to East Bay Regional Park District.