“We acknowledge that Mount Diablo is the ancestral home, since time immemorial, of the Wilton Rancheria, Bay Miwok, Confederated Villages of Lisjan, Northern Valley Yokut, and Muwekma people.”
Mount Diablo State Park is one of the ecological treasures of the San Francisco Bay Area. Every season in the park has its special qualities. Discover them for yourself, from the mountain's 3,849-foot summit to its beautiful wildflowers, extensive trail system, fascinating wildlife, and distinctive rock formations. Download the Mount Diablo State Park brochure or see Park Information
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Take a Multimedia Tour
Audible Mount Diablo provides an audiovisual collection of the sights and sounds of Mount Diablo State Park.
Mount Diablo Interpretive Association
Preservation Through Education
Mount Diablo Interpretive Association is a non-profit, all-volunteer organization that assists the California Department of Parks and Recreation in maintaining and interpreting Mount Diablo State Park. MDIA is dedicated to preserving the wonders of Mount Diablo State Park through interpretation, education, and outreach to all communities.
Check out our clothing, books, maps, and more. Every purchase supports MDIA's programs and activities.