Become a Member of 
Mount Diablo Interpretive Association

MDIA counts on your support to provide docents for the visitor centers, sponsor the Junior Ranger program, guide hikes, and provide interpretive material and publications to park visitors. In addition, MDIA member volunteers spend countless hours each year working side by side with park staff to insure that visitors continue to get an opportunity to enjoy Mount Diablo State Park to its fullest.

Mount Diablo, North Gate poppies | Mike Woodring

All Net Proceeds from dues, donations and sales of publications directly support Mount Diablo State Park. Dues and donations are tax deductible to the full extent allowed by the law.