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Big Obsidian Flow (center), a 1,300-year-old lava flow, is the youngest product of Newberry volcano. Paulina Peak (back center) forms the highest point on the rim of Newberry Crater, a large caldera or volcanic depression at the summit of the volcano.
(USGS photograph taken by William E. Scott, U.S. Geological Survey.)
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| Western Open-File Reports for 2007
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