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roadside drainage swale in coarse volcanic soils and gravels
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roadside drainage swale in coarse volcanic soils and gravels
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roadside drainage swale in coarse volcanic soils and gravels
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on low steep roadcut in volcanic andesite rock
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on low steep roadcut in volcanic andesite rock
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on low steep roadcut in volcanic andesite rock
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on low steep roadcut in volcanic andesite rock
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on low steep roadcut in volcanic andesite rock
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on low steep roadcut in volcanic andesite rock
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on low steep roadcut in volcanic andesite rock
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Sept 23, 2011, Bear Canyon, Santa Catalina Mountains, Arizona
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on low steep roadcut in volcanic andesite rock
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Sept 23, 2011, Bear Canyon, Santa Catalina Mountains, Arizona
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on low steep roadcut in volcanic andesite rock
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Sept 23, 2011, Bear Canyon, Santa Catalina Mountains, Arizona
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on low steep roadcut in volcanic andesite rock
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September 5, 2011, Madera Canyon Santa Rita Mountains, Arizona
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