Learn all about Mount Diablo's often-breezed-by tall plants: its pines and its chaparral. The latter covers only 3 percent of the earth's land mass and yet holds 20 percent of its biodiversity.

This is episode seven in "Falls Trail," a 13-part series featuring Ken Lavin, Burt Bogardus, Paul Cardinet, and Jenn Roe. Presented by Mount Diablo Interpretive Association in partnership with Save Mount Diablo. Music Phil Heywood. Video Kendall Oei. Photos Scott Hein and others. Writing, narration, production Joan Hamilton.