Learn about two MOUNT DIABLO PINES—and the men who studied them by shooting down their cones with rifles. It's the last installment of our guide to MITCHELL CANYON, presented by Mount Diablo Interpretive Association in partnership with Save Mount Diablo.

First published in 2012, revised in 2017. Music from Banks of the River by Phil Heywood. Photos by Scott Hein (and others mentioned in closing credits) Narration and production by Joan Hamilton.