Pinnacles National Park

Pinnacles National Forest was a United States National Forest in California. It was established as the Pinnacles Forest Reserve under the authority of the U.S. Forest Service by Presidential proclamation on July 18, 1906 with 14,108 acres (57.09 km²). It became a national forest on March 4, 1907 when all U.S. national forest reserves were redesignated as national forests by act of U.S. Congress. On July 1, 1908, Pinnacles was added to Monterey National Forest by executive order, and the name was discontinued. The lands currently exist in Los Padres National Forest and in Pinnacles National Park, proclaimed as Pinnacles National Monument by Theodore Roosevelt in 1908.

Neenach Volcano is an extinct Miocene volcano in the Coastal Ranges of California. After formation, the volcanic field was split by a fault in the San Andreas Fault Zone, and over the last 23 million years, the two halves of the volcano have moved about 195 miles (314 kilometers) apart.