Or possibly Sibley Volcanic Regional Preserve http://www.ebparks.org/parks/sibley.htm http://www.ebparks.org/parks/sibley.htm , which is closer (though not nort

Or possibly Sibley Volcanic Regional Preserve http://www.ebparks.org/parks/sibley.htm http://www.ebparks.org/parks/sibley.htm , which is closer (though not north of) Berkeley.