Wilderness Landscape & Natural Heritage
Spanning the Cascade Range in central Oregon, the Three Sisters Wilderness covers approximately 286,708 acres, part of both the Deschutes and Willamette National Forests. Dominated by its three iconic volcanic peaks—North Sister, Middle Sister, and South Sister—this wilderness area is a haven for outdoor enthusiasts. The diverse ecosystem includes alpine meadows, dense forests, clear lakes, and volcanic landscapes. Formed by geological activity, the Three Sisters and other volcanic formations create a rugged, scenic beauty that draws thousands of visitors each year. Historically, this land was inhabited by Native American tribes, who used the area for its resources. Established as a part of the National Wilderness Preservation System in 1964, it remains a pristine environment for hiking, camping, and wildlife viewing. Key attractions include hiking trails such as the South Sister Climb, scenic lakes like Moraine Lake, and unique geological features such as the Obsidian Cliffs. The area's appeal is amplified by an extensive trail system, providing access for both casual adventurers and seasoned trekkers.
