The Calapooya Mountains are a mountain range located in southwestern Oregon, primarily within Lane County. They are part of the larger Cascade Range and are known for their rugged terrain, dense forests, and diverse wildlife. The mountains are home to various recreational activities, including hiking, camping, and wildlife viewing. The highest peak in the Calapooya Mountains is Diamond Peak, which reaches an elevation of 8,744 feet. The range is also significant for its geological features, including volcanic formations and glacial valleys. The area is rich in natural beauty, attracting outdoor enthusiasts and nature lovers alike.