Robert Sibley Volcanic Regional Preserve, Volcanic regional preserve in Oakland Hills, California, US
The 928-acre preserve contains volcanic formations, including Round Top peak at 1,763 feet elevation, featuring lava deposits and geological exhibits.
Established in 1936 as Round Top Regional Park, the preserve was later renamed to honor Robert Sibley, the second president of East Bay Regional Parks District.
The preserve functions as an educational center where visitors learn about volcanic geology through self-guided tours and interpretive displays at the visitor center.
Multiple trails accommodate hiking and horseback riding, with designated wheelchair-accessible paths leading to the summit and viewing platforms.
The preserve contains remnants of a volcano that erupted 10.2 million years ago, featuring distinct red-colored rocks formed by intense heat from volcanic activity.
Inception: 1936
GPS coordinates: 37.85495,-122.20326
Latest update: May 15, 2025 10:28
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