Great glaciers carved Diamond Peak after volcanic activity created the mountain. Today, at 8,744 feet, it surpasses every other summit in this region of the Cascade Mountains. Diamond Peak Wilderness, which straddles the crest of the Cascades, rests largely beneath a dense forest of mountain hemlock, lodgepole and western pine, and silver, noble, and other true firs. Snowfields remain most of the year in pockets above the tree line, and dozens of small lakes, one to 28 acres in size, bejewel the high country. Pikas and marmots scurry about the numerous scree slopes, along with Roosevelt elk, at least until November snows drive them out. Stinging hordes of mosquitoes hatch from the first of July through much of August. Excluded from Wilderness designation but on the eastern and southern boundaries you'll find three large scenic lakes: Summit, Crescent, and Odell. Approximately 14 miles of the Pacific Crest National Scenic Trail pass through the area and near Diamond Peak itself, and another 38 miles of trails give access to many lovely lakeside campsites. Mountain climbers scaling Diamond Peak's nontechnical summit often set up base camps at Marie Lake, Divide Lake, and Rockpile Lake. Much of this area is worthy of off-trail exploration.
Leave No Trace
How to follow the seven standard Leave No Trace principles differs in different parts of the country (desert vs. Rocky Mountains). Click on any of the principles listed below to learn more about how they apply in the Diamond Peak Wilderness.
Digital and paper maps are critical tools for wilderness visitors. Online maps can help you plan and prepare for your visit ahead of time. You can also carry digital maps with you on your GPS unit or other handheld GPS device. Having a paper map with you in the backcountry, as well as solid orienteering skills, however, ensures that you can still route-find in the event that your electronic device fails.
Motorized equipment and equipment used for mechanical transport is generally prohibited in all wilderness areas.
This includes the use of motor vehicles, motorboats, motorized equipment, bicycles, hang gliders, wagons, carts, portage wheels, and the landing of aircraft including helicopters.
Oregon Wilderness Act of 1984 - Public law 98-328 (6/26/1984) To designate certain national forest system lands in the State of Oregon for inclusion in the National Wilderness Preservation
System, and for other purposes