Neenach Volcanic Field
Detailed Description
The Neenach Volcanic Field was formed by the same eruptions as the Pinnacles, and the two were split by the movement of the San Andreas Fault over 23 million years. The remnants of the eastern part of the largely rhyolitic volcanic formations remain in Southern California,195 miles (314 kilometers) away. Photo courtesy of Garry Hayes, Modesto Junior College.
Sources/Usage
Public Domain.
Image courtesy of Garry Hayes. Do not reproduce without permission of the photographer.