Diamond Peak Wilderness is located within the Deschutes National Forest.

Diamond Peak Wilderness straddles the Cascade Mountains. Diamond Peak was formed by volcanic activity. Great glaciers carved the large volcanic peak and when they receded, the bulk of the mountain remained with snowfields near the summit and dozens of small lakes surrounding the peak. Lakes are one to 28 acres in size. Approximately 14 miles of the Pacific Crest National Scenic Trail pass through this wilderness. Another 38 miles of trail, including the 10-mile Diamond Peak Trail, stretches the length of the west side of the peak.

• Hike the Diamond Creek Trail which stretches the length of the west side of the peak for spectacular views of this pristine wilderness.