Mount Diablo, California, USA
Photo (c) 2008 Andrew Alden, licensed to About.com, Inc. (fair use policy)
Mount Diablo has a central place in the San Francisco Bay area, serving as the base point for land surveys here and across Nevada. People who don't know much about geology often think that Mount Diablo must be a volcano given its shape and its name, but it is a complexly folded and uplifted body of mixed rocks whose history is not easily summarized and is still under study. Learn more about it and see more pictures in the Mount Diablo Gallery. This view is to the east from the Oakland Hills.
San Francisco Bay Area Photo-Tour
