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December 22, 2014

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Sarah Phillips, of the Johnston Ridge Observatory at Mount St. Helen's, educates the public about the explosive eruptive past and the eruptive future of Washington's most famous volcano, May 13, 2014.

Dean J. Koepfler / Tacoma News Tribune/MCT

Sarah Phillips, of the Johnston Ridge Observatory at Mount St. Helen's, educates the public about the explosive eruptive past and the eruptive future of Washington's most famous volcano, May 13, 2014.