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Sibley Volcanic Regional Preserve
The geologic history of the east bay is easily seen in Round Top, one of the area's highest peaks, left over from a 10-million-year-old volcano.
667 acres
Restricted Access
Contra Costa County
Managed By: East Bay Regional Park District
A self-guided brochure is available at the preserve's staging area highlighting the preserve's geological features. Cross sections of the underlying bedrock geology are easily seen in the former quarry in the northern section of the park.
The preserve trails include a portion of the Bay Area Ridge Trail.
East Bay Regional Park District's page for this park.
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Sibley Volcanic Regional Preserve
-
The geologic history of the east bay is easily seen in Round Top, one of the area's highest peaks, left over from a 10-million-year-old volcano.
-
A self-guided brochure is available at the preserve's staging area highlighting the preserve's geological features. Cross sections of the underlying bedrock geology are easily seen in the former quarry in the northern section of the park.
The preserve trails include a portion of the Bay Area Ridge Trail.
East Bay Regional Park District's page for this park. - 37.8541530338 -122.201570028
