Image 67 of 84

Autumn Sojourn in the Pacific Northwest

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National Geographic Sea Lion's Mt. St. Helens Volcano day trip and hike. Hummocks, formed by the debris flow from the eruption in 1980.
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copyright © 2009 Susan Seubert Photography All Rights Reserved
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National Geographic Sea Lion's Mt. St. Helens Volcano day trip and hike.  Hummocks, formed by the debris flow from the eruption in 1980.