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ophis: top of ledge, looking north
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ophis: top of ledge, looking south
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ophis: flow-banded rhyolite
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ophis: top of quarried face
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ophis: flow-banded rhyolite
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ophis: flow-banded rhyolite
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ophis: quartz vein in dark rhyolite
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ophis: flow-banding on rhyolite cobble
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ophis: flow-banding on rhyolite cobble
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ophis: greenish rhyolite