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Alaska
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Aleut tradition
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Ice Age
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Katmai Monument
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New York
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Northwest
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Pacific -- History -- 20th century
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V-shaped valley
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Yukon Basin
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calc-silicate rock
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corundum
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gem deposits
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gravel moraine
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grizzlies
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ice cliff
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ice phenomena
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marble
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metamarl
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nepheline
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proterozoic
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purple glacier
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scapolite
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snowflakes
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the Arctic
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turbulent surface
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volcanic marvels
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