In the late 1700s, when the Spanish came north along the coast of California, they brought food with them in the shape of CATTLE. That was the beginning of a slow, but revolutionary change in the state's ecology. This is EPISODE 2 in an 8-part "Brief History of Mount Diablo State Park," featuring Ken Lavin, Seth Adams, Robert Doyle, Michael Marchiano, Vincent Medina, and Cameron Morrison.

Presented by Mount Diablo Interpretive Association in partnership with Save Mount Diablo and Mount Diablo State Park. Photography and video by Kendall Oei, Scott Hein, and Wally de Young, among others. Music by Phil Heywood. Production by Joan Hamilton.