On July 12, 2021 the “Silent Angels of Scenic” Installed a Solid Double Yellow Line in the “Danger Zone” on Mt. Diablo Scenic Blvd. By bikedanville | July 13, 2021 Posted in History Danger Zone, Videos ← Park Visitor Vehicles Parking in the Danger Zone: 20 Boy Scouts Hiking to the Summit of Mount Diablo State Park, July 11, 2021Diablo: Residents clash over public access of short-cut to Mount Diablo → About bikedanville View all posts by bikedanville →