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OLYMPUS DIGITAL CAMERA

A closer view of the area of altered rock that is being exposed as the caldera floor to the right drops down. Photo taken Tuesday, July 31, 2018 courtesy of U.S. Geological Survey

A closer view of the area of altered rock that is being exposed as the caldera floor to the right drops down. Photo taken Tuesday, July 31, 2018 courtesy of U.S. Geological Survey

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