Deschutes County topographic maps

The Three Sisters are closely spaced volcanic peaks in the U.S. state of Oregon. They are part of the Cascade Volcanic Arc, a segment of the Cascade Range in western North America extending from southern British Columbia through Washington and Oregon to Northern California. Each more than 10,000 feet (3,000 m)…

Average elevation: 2,526 m

Average elevation: 2,604 m

Average elevation: 1,312 m

Average elevation: 1,696 m