Sibley Volcanic Regional Preserve - Oakland, CA - Public Access Lands on Waymarking.com

"Robert Sibley Volcanic Regional Preserve is located in the Berkeley Hills just east of Oakland, California, USA. The park straddles Alameda County and Contra Costa County. The park can be entered from Oakland on Skyline Boulevard or from Contra Costa County on Old Tunnel Road.

The park was one of the first three parks established by the East Bay Regional Parks District (EBRPD) in 1936. It was originally named Round Top Regional Park. Round Top (elevation 1,761 feet/537m) is an extinct volcano in the Berkeley Hills. It is home to several stone labyrinths of recent origin. The park was renamed for the second president of the EBRPD, Robert Sibley, shortly after his death.

The preserve contains a volcanic center that, about 10 million years ago, produced most of the lavas that underlie the East Bay ridges from Inspiration Point in Tilden Regional Park to Moraga; geologists refer to this local volcanism as the Moraga Volcanics. Subsequent compressive strains produced by various local faults including the Hayward Fault folded the lava-bearing rock formations, tilting the Round Top vent complex on its side. Folding, erosion, and a quarry operation exposed a cross section of the great volcano, providing an excellent means to study a Central Coast range volcano. Lava within the vent has been dated by UC Berkeley at 9.5 million years old." (visit link)

Estimated size of the public land (in regional measurement standard: hectares, acres, kms, etc.): 600 acres Is there a trail system?: Yes If there is a trail system, please describe length, terrain, etc.: Different trails of different lengths. What points of interest are there?: Round Top volcano What activities are available?: Hiking Hours of accessibility?: 8-5 List of known hazards (cliffs, snakes, poison plants, etc.): mountain lions Snakes Dogs Allowed?: Yes Is a permit/fee required?: No Please supply the website of the land if available: [Web Link] If a permit/fee is required please describe in detail how to get one, how much, etc.: Not listed

Visit Instructions:
Visitors are encouraged to supply a picture of either themselves or their GPS at the trailhead and/or signage of the public access lands - describe your experience there and what you saw - tell us why other folks should come visit!

Recent Visits/Logs:

Date Logged Log User Rating   02/20/2015 leafyseadragon visited it