The Nine Sisters or the Morros are a chain of nine volcanic peaks and hills between Morro Bay and San Luis Obispo, California. They are popular with photographers and rock climbers. Their volcanic origin makes them of significant geological interest. They support a wide variety of plant, animal, and bird life. Two of the peaks are in Morro Bay State Park.
The peaks were created over 20,000,000 years ago as volcanic plugs of magma which welled up and solidified inside softer rock which has since been eroded. The highest peak is Bishop Peak at 1,559 feet (475 m).
The peaks in order from Morro Bay to San Luis Obispo including their height.
- Morro Rock 576 feet (176 m)
- Black Hill 665 feet (203 m)
- Cabrillo Peak 911 feet (278 m)
- Hollister Peak 1,404 feet (428 m)
- Cerro Romauldo 1,306 feet (398 m)
- Chumash Peak 1,257 feet (383 m)
- Bishop Peak 1,559 feet (475 m)
- Cerro San Luis 1,292 feet (394 m)
- Islay Hill 775 feet (236 m)
- "The Nine Sisters of San Luis Obispo County". Sierra Club San Luis Obispo. Retrieved 2009-06-25.
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