Fort Rock is the iconic image of central Oregon. This formation is a tuff ring, formed when magma interacts with wet soil. A few hundred feet lower in elevation than the Hole in the ground, this magmatic encounter may have been with surface water. Wikipedia has a whole description of what happens. Whatever happened, it's an interesting formation. Oh, and don't forget the Fort Rock Valley Historical Homestead Museum.
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| Fort Rock from the Highway | The Homestead Museum | |||
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| Fort Rock | ||||
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