Learn about wood, polypody, goldenback, and maidenhair FERNS. In springtime you might also see two impressive early-blooming flowers: warrior's plume and mission bells. Each has an interesting story.

This tour of Mount Diablo's ROCK CITY is presented by Mount Diablo Interpretive Association. First published in 2015, updated in 2018. Featuring Ken Lavin, Rich McDrew, David Mackesey, and Mike Woodring; Music: Phil Heywood; Production, Narration: Joan Hamilton; Photos: Seth Adams, Contra Costa Historical Society, Joan Hamilton, Moose Henderson, Ken Lavin, Conrad Lowry, Mark Sinclair; Special thanks to Anastasia Hobbet, Conrad Lowry, Jennifer Roe, Jerry Schweickert, Mark Sinclair, Stephen Smith.