Mountain Climbing: Diamond Peak, elevation 8,744 feet, is most often climbed from the south ridge. It is not a difficult climb, but climbers should always be fully equipped, and under experienced leadership. North of Diamond Peak lies the summit of Mt. Yoran, at 7,138 feet, which is low compared with many Oregon peaks, but its steep precipice offers good rock climbing for skilled mountaineers.

The USDA Forest Service established the Diamond Peak Wilderness area on February 5, 1957. The 52,337-acre area straddles the Cascade Mountains in both the Deschutes and Willamette National Forests, offering many opportunities for outdoor recreation. The elevation rises to 8,744 feet. Diamond Peak was formed when the Cascades were undergoing volcanic activity - Great glaciers carved the large volcanic peak, and when they receded, the bulk of the mountain remained. There are snowfields near the summit and dozens of small lakes surround the peak.

Access: From Eugene, drive down State Highway 58 southeast to the Willamette Pass trailhead; or Take Hwy 58 to Road 5810 to the Yoran Trailhead; or take 58 to Road 60 to the Whitefish, Fawn Lake, and Windy-Oldenburg Trailheads; or take Hwy. 58 to Road 60 and take Road 6010 to the Snell Lake and Summit Lake Trailheads. Marie Lake, Divide Lake, and Rockpile Lake are popular base camps for the climb up Diamond Peak.

Forests: The Wilderness is the home of black-tailed deer, mule deer and elk. Bear and small mammals including marmots, snowshoe rabbits, squirrels, pine martens, foxes, and conies inhabit the area all year long. Nearly the entire area is covered with mountain hemlock, lodgepole and western white pine, silver and noble firs. Alpine flowers, including varieties of mimulus, lupine, penstemon, heather, and Indian paintbrush, are common along trails, lakeshores, streams and meadows.

Trails: Approximately 14 miles of the Pacific Crest National Scenic Trail pass through this wilderness. The trail is regularly maintained and easy to follow. The hiking season extends from about July 1 to October 1. Portions of the trail are snow covered and may be impassable early in the season. Travelers must carry all their food into the wilderness; the closest place to buy food is at Odell Lake. Another 38 miles of trail, including the 10-mile Diamond Peak Trail, stretch the length of the west side of the peak.