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

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judy adler connecting kids with nature. photo by stephanie felix

Adler Education Fund

The Adler Education Fund was initiated by a generous $100,000 challenge grant from locally renowned environmental educator, Judy Adler.

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Krane Pond property and North Peak

Our Latest Acquisition

We've secured an option to purchase the Krane Pond property, a 6.69-acre parcel directly adjacent to Clayton and Mount Diablo State Park.

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Oaks and pond at the former Concord Naval Weapons Station

Victory in Concord!

The Concord City Council voted on January 28 to drop Seeno as Master Developer and let their agreement expire.

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Upcoming Activities

Bob Walker Ridge Hike

February 25th, 2023
Sold Out—Join the Waitlist
Morgan Territory Road Staging Area

On Belay – Rock Climbing

February 25th, 2023
Sold Out—Join the Waitlist
Rock City Parking Lot

Green Hills, Ponds, & Newts Hike

March 11th, 2023
Sold Out—Join the Waitlist
Briones Road Staging Area, Briones Regional Park

Our Land Conservation Work


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

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

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

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

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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!

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