Our mission is to forever preserve the remaining natural lands on and around Mount Diablo, and to connect Mount Diablo to its sustaining Diablo Range.

Learn More about Our Mission

Moonlight on the Mountain

Moonlight on the Mountain is completely sold out. Please call Shannon at 925-951-0306 or email to be added to the waitlist.

Event Information

Support Save Mount Diablo

Give today and protect the natural lands of the Mount Diablo region, forever!

Donate Now

Upcoming Activities

Tarantula Hike for Families

September 3rd, 2022
Sold Out—Join the Waitlist
Mitchell Canyon Interpretive Center Parking Area

Tarantula Hike for Adults

September 10th, 2022
Sold Out—Join the Waitlist
Mitchell Canyon Interpretive Center Parking Area

Our Land Conservation Work


We protect natural lands through acquisition; cooperative efforts with parks, developers, and landowners; and conservative easements.

Learn More


We defend Mount Diablo and its foothills from threats of development through land use planning and advocacy.

Learn More


We restore habitats prior to transfer to public agencies for permanent preservation and public use.

Learn More


We help people enjoy Diablo's parks through events and educational and recreational opportunities.

Learn More
Lands protected by Save Mount Diablo between 1971 and 2022

Many Acres of Wild Lands Have Been Saved

Protected Lands from 1971–2022

In 1971, there was just one park on Mount Diablo. It consisted of only 6,788 protected acres, mostly around the peak. Working with partners such as California State Parks, Contra Costa County, the East Bay Regional Park District, local cities, the Coastal Conservancy, Contra Costa Water District, and others—we, together with the help of generous supporters like you, have pieced together a conserved expanse of Diablo wild lands that today is greater than 120,000 acres, an area bigger than Point Reyes National Seashore or the Golden Gate National Recreation Area.

Although we and our partners have had tremendous success at reassembling a large swath of the wild lands around Mount Diablo, there is still much work to do to save the remaining unprotected lands and allow our community to grow.

Protected Lands

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

Make a Donation