Field Trips

Saturday, April 6, 2019, 10:00 am to 12:00 pm
Sibley Volcanic Regional Preserve, Oakland. Directions from Hwy 24: Take CA-24 to Old Tunnel Road in Contra Costa County just east of the Caldecott Tunnel. Drive up Old Tunnel Road to the parking lot and trail head. Trip leaders Camille and Liz will be at the trail head. For more information see

Saturday, April 13, 2019, 9:45 am to 2:45 pm, every 12 months on the 2nd Saturday. Briones Regional Park, Briones Road Staging Area, Briones Road, Martinez. Hosted by Gregg Weber. For more information see

Sunday, April 21, 2pm, David Margolies will lead a nature walk in Mount Diablo State Park. We will walk the Mitchell Canyon Fire Road. The primary plant community is oak savanna. There should be plenty of flowering shrubs and wildflowers. We hope to see the Mt. Diablo fairy lantern, wind poppies, various lupines, hop bush, blue blossom, larkspurs, and much else. Directions: Drive to Clayton (on, for example, Ygnacio Valley Road from Walnut Creek). Go south on Clayton Boulevard to Mitchell Canyon Road, and take that road toward the mountain to the end. You will then be in the park. There is a parking lot (and an overflow lot some way back on Mitchell Canyon Road. Meet at the trail head. We will walk a mile or so up the trail and then walk back. David Margolies can be contacted at 510-393-1858, See also