Park It: 2017's California Coastal Cleanup on Saturday

Naturalist “Trail Gail” Broesder will lead a hike in search of signs of impending fall from 9 to 11 a.m. Sept. 17 at Briones Regional Park near Orinda. Meet at the Alhambra Staging Area on Reliez Valley Road near Martinez. The hike is for ages 8 and older. For information, call 510-544-2233.Oakland: The biggest trees in the world are the subject of a program by naturalist Michael Charnofsky from 10 a.m. to noon Sept. 17 at Roberts Regional Recreation Area in the Oakland hills.On a 1½-mile walk, Michael and the group will search for evidence of a redwood tree that was 32 feet in diameter, and visit the site of the Blossom Rock Trees that were visible from San Francisco Bay.Meet at the park’s main entrance, which is on Skyline Boulevard about a mile north of the intersection with Joaquin Miller Road. For information, call 510-544-3187.Fremont: There’s a hide-and-seek of sorts in the works at Coyote Hills Regional Park in Fremont, orchestrated by naturalist Kristina Parkison.Kristina’s Curiosity Cart, filled with wonders of cultural and natural history, will be hidden somewhere within the park during programs from 9 to 11 a.m. Sept. 16 and 1 to 3 p.m. Sept. 30. Find the cart and enjoy learning about its contents.Coyote Hills is at the end of Patterson Ranch Road off Paseo Padre Parkway. There’s a parking fee of $5 per vehicle. For information, call 510-544-3220.Online: And there’s all kinds of information about East Bay Regional Park District programs and facilities at the district web site, www.ebparks.org.Ned MacKay writes a regular column about East Bay Regional Park District sites and activities. Email him at nedmackay@comcast.net. (East Bay Times)