This map covers Mount Diablo and the surrounding area. It's identical to the printed Mount Diablo map from Redwood Hikes Press, except the two sides of the map have been combined into a single large image, and the small Brushy Peak map isn't included. Parks on the map include Mount Diablo State Park, Lime Ridge Open Space, Shell Ridge Open Space, Diablo Foothills Regional Park, Sycamore Valley Open Space Preserve, Morgan Territory Regional Preserve, Los Vaqueros Watershed, Round Valley Regional Preserve, and Black Diamond Mines Regional Preserve. All official hiking trails were drawn from newly-acquired GPS data with a resolution of about 100 feet. Memorial grove markers, footbridges, panoramic viewpoints, and stairs are shown. Most roads are shown and labeled. In addition, unofficial trails and dirt roads are shown and are greyed out to distinguish them from official hiking trails. Wooded areas are indicated in green, developed areas in grey, and 40 foot contour lines are shown. Trail distances are marked. The map was drawn at a scale of 1:25,000 and a size of 57 x 48 inches.