Labor Day - Greathouse Visitor Center Open

Mon · Sep 7·City Offices are Closed on Federal Holiday, Antioch

City Offices are Closed on Federal Holiday

Mon · Sep 7·Big Break (Oakley): Big Break Visitor Center at the Delta

BIG BREAK: Bring the little ones to the park for nature before nap time. Same program both days - come to one OR the other! September: Outrageous Otters October: Spinning Spiders Drop-in program, no registration. Free Program. Meet at the Visitor Center. Adult participation required. For information, call: (510) 544-30…

Mon · Sep 7·1 PM – 12 AM·Big Break (Oakley): Big Break Visitor Center at the Delta

BIG BREAK: Teen Homeschool program. Support Big Break Staff members in current scientific research in the park. We will take a closer look at the habits of animals in the park. Program dates- Sept 7, Sept 14, Sept 21, Sept 28 REGISTRATION REQUIRED- Please register each teen participant. Registration is for the entire s…

Mon · Sep 7·Pittsburg, CA

Sun · Sep 6·1:30 PM·Black Diamond Mines (Antioch): Upper Parking Lot

BLACK DIAMOND MINES REGIONAL PRESERVE - Ever wonder why so many trees seem to be growing spheres, diamonds, or stars on their leaves and branches? Seemingly hidden in plain sight, these galls emerge from complex relationships between plants and animals. Learn about their amazing world and discover stories of manipulati…

Sun · Sep 6·10:30 AM·Black Diamond Mines, Antioch

BLACK DIAMOND MINES REGIONAL PRESERVE – Although little evidence remains from the area’s coal mining history, Black Diamond Mines Regional Preserve was once home to the most productive coal mines in California and the thriving mining communities that supported its industry. Visitors can still catch a glimpse of what it…

Fri · Sep 4·10:30 AM·Crown Beach, Alameda

DOUG SIDEN VISITOR CENTER AT CRAB COVE: Dive into a world of wonder and imagination followed by a themed coloring sheet after. Every Friday Drop-in; no registration required. For information, call 510-544-3187. MAP: Doug Siden Visitor Center at Crab Cove

Fri · Sep 4·7 PM·Del Valle, Livermore

DEL VALLE - What was Del Valle like before the lake? Discover the valley’s history through hands-on activities and stories during this family campfire. 7-8:30pm, Every Friday Memorial Day weekend through Labor Day weekend Location: Del Valle Campground Amphitheater If you are not camping, please park behind the camp st…

Sat · Sep 5·9 AM·Black Diamond Mines, Antioch

BLACK DIAMOND MINES REGIONAL PRESERVE - Are you trying to complete this year's Trails Challenge but still haven't made it to Black Diamond Mines? Join a guided hike through the rugged beauty of this park and cross one of the most adventurous and beautiful trails off your list. Hike through the challenging landscapes, d…