1979 Map of Red Bluff

Moving west, the terrain rises sharply from the Bald Hills into the high elevations of the Trinity Mountains, protected within the Trinity National Forest and Mendocino National Forest. This 1979 revision highlights the contrast between the developed river valley, with its network including Interstate 5 and State Highway 99, and the remote western reaches of the Yolla Bolly - Middle Eel Wilderness. Smaller locales like Balls Ferry and Dairyville dot the landscape, while the Midas Mine points to the area's mineral history.