CUMBERLAND TRIAL Parks are great. But connected wildlands are even better, for wildlife and people. In this episode of our Black Diamond Mines guide, learn about how you can make the wide open spaces of eastern Contra Costa County part of an epic Bay Area trek.

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.