A mountain formed by natural faults in the earth’s crust.
- Southern Oregon is home to some of the finest examples of fault block mountains in North America.
- Steens Mountain, a 30-mile long fault block mountain in southeast Oregon, sits about 60 miles south of Burns.
- The Tetons are a still different kind - a fault block mountain range carved from a segment of the earth's crust that has been uplifted along a fault.
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