Sold Out—Join the Waitlist

Black Diamond Mines Halloween Hike

Somersville Staging Area Black Diamond Mines Regional Preserve, Antioch, CA, United States

All Discover Diablo hikes are subject to, and will honor, all applicable COVID-19–related restrictions in place for our area.Come celebrate Halloween on the trails of Black Diamond Mines Regional Preserve…

Free

Join us to save the remaining natural lands of Mount Diablo!

Make a Donation