December 3, 2013December 10, 2014Pinnacles Scroll down to content Pinnacles National Monument is in California’s central valley. It is the eroded remains of an ancient volcanic field. Rate this:Share this:Click to share on Facebook (Opens in new window)Click to share on Pinterest (Opens in new window)Click to email this to a friend (Opens in new window)Click to share on Pocket (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Reddit (Opens in new window)Click to print (Opens in new window)Click to share on Tumblr (Opens in new window)Like this:Like Loading... Related Published by Micheal K View all posts by Micheal K