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Drill Rig Near Monument Rocks
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Niobrara Chalk Outcrops
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Monument Rocks
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The Sphinx (1983)
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The Sphinx
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Base of Sphinx after Collapse
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Chalk Badlands
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Fault in Chalk Formation
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Faulted Area in Chalk Exposure
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Cretaceous Fossil Beds
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Chalk Bluffs and Outcrops
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