Mount Diablo Interpretive Association (MDIA) is a non-profit volunteer organization that assists the California Department of Parks and Recreation in maintaining and interpreting Mount Diablo State Park for its 700,000 visitors each year. Through education, sponsored activities and publications, MDIA fosters appreciation and the enlightened use of Mount Diablo State Park. MDIA is proud to provide the resources necessary to keep the Summit Museum and Mitchell Canyon Visitor Center open throughout the year, and through the Volunteers in the Park Program, train and manage the many park docents, sponsor guided hikes, and help maintain trails.
