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Partly silicified mammoth tree stumps. en Partly silicified mammoth tree stumps Sequoioxylon gypsaceum on the area of the GeorgAugustUniversitt Gttingen Found in Espenhain near Leipzig Saxony Age about million years own Stefan Bellini WTFPL Files by User Stefan Bellini Photos taken in Lower Saxony Taken with Sony DSCHX Petrified