Serpentinite Boulders
Shell Beach, California: A Showplace of Franciscan Rocks
From Andrew Alden, About.com
Take time to inspect the round boulders of serpentinite as you descend or ascend the walkway. Hammering and collecting are prohibited in this state park.
Photo (c) 2008 Andrew Alden, licensed to About.com
©2009 About.com, a part of The New York Times Company.
All rights reserved.