geologist study ash lava outside of crater Mount St Helens Volcano National monument

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Photo credit: © Tom Uhlman / Alamy / Afripics
License: Licensed
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Keywords: ash, cascade, climb, crater, dog, fire, geologist, helen, helens, hike, hiker, hiking, lava, monument, mount, mountain, national, pacific, park, range, ring, saint, side, snowfield, st, stratovolcano, study, tourist, volcano, washington