The Three Sisters are three volcanic peaks of the Cascade Volcanic Arc and the Cascade Range in Oregon, each of which exceeds 10,000 feet (3,048 m) in elevation. They are the third, fourth, and fifth highest peaks in the state of Oregon and are ...
The Three Sisters are three volcanic peaks of the Cascade Volcanic Arc and the Cascade Range in Oregon, each of which exceeds 10,000 feet (3,048 m) in elevation. They are the third, fourth, and fifth highest peaks in the state of Oregon and are ...