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The remains of an undersea volcano some 20 million years ago.
Mountain biking at Russian Ridge Open Space Preserve.
Carol Rollins | 13-Jun-2013 13:53 | |
Graeme | 12-Jun-2013 13:09 | |
Fong Lam | 12-Jun-2013 04:43 | |
Dennis Hoyne | 12-Jun-2013 03:01 | |
coaster | 12-Jun-2013 02:19 | |
J S Quesada | 12-Jun-2013 01:13 | |
laine | 11-Jun-2013 22:39 | |
Chris Spracklen | 11-Jun-2013 22:07 | |
Karen Stuebing | 11-Jun-2013 21:11 | |
Walter Otto Koenig | 11-Jun-2013 14:50 | |
globalgadabout | 11-Jun-2013 13:40 | |
Jim Coffman | 11-Jun-2013 12:24 | |
Hank Vander Velde | 11-Jun-2013 11:57 | |
Mike H. | 11-Jun-2013 04:53 | |
Tom Munson | 11-Jun-2013 04:52 | |
joseantonio | 11-Jun-2013 04:12 | |