Thanks to you, we completed forever wild
Thanks to you, we completed forever wild

Recent News, Announcements, and Field Notes

Read the Latest on Save Mount Diablo’s Blog

Read our Blog


Zoom Presentations, Guided Hikes, Restoration Workdays, and Upcoming Events

Sunrise Hike

August 7 @ 6:00 am - 9:00 am

Caminemos (Let’s Hike) Mangini Ranch!

August 13 @ 5:30 pm - 7:30 pm

Mangini Ranch Meditation Hike

August 14 @ 7:00 am - 9:00 am

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Many Acres of Wild Lands Have Been Saved


Lands SMD Protected 1971 to 2020

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

Our Land Conservation Work


We protect natural lands through acquisition; cooperative efforts with parks, developers, and landowners; and conservation 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 habitat prior to transfer to a public agency 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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How You Can Help