"Mount Diablo has a forbidding image to many, in part because of its name and the legends it has inspired. While creeks may dry in summer, the reality is that there are always cool canyons, and even on hot days cool breezes cross upper elevations. On the less-traveled north side of Mount Diablo are many shady, wooded canyons, and because they’re protected from the sun most of the day, Donner, Back, and Mitchell Canyons have among California’s best wildflower shows. The seasonal waterfalls in the upper reaches of Donner Canyon, especially in Wild Oat Canyon along Falls Trail, are spectacular. This eTrail also includes suggested nearby attractions, camping & lodging, restaurants, and local outdoor retailers."