HISTORY “DANGER ZONE” 1920 TO 2021

We are in the process of analyzing and publishing primary documents concerning the history of the “Danger Zone” Mt. Diablo Scenic Blvd from 1920 to 2021. We welcome your suggestions! Please send us any documents, emails, reports, surveys, photos, videos, etc. It’s important for All historical documents to be published and shared with everyone! (bikedanville@yahoo.com