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Distant View to Monument Rocks
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Sandstone Concretion
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Fencepost Limestone of the Greenhorn Limestone Formation
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Rocktown Cove at Wilson Lake
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Dakota Sandstone Outcrops
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Grazing Cattle
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Pillsbury Crossing
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Sandstone Concretion Hoodoo
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Niobrara Chalk and Shale Banded Badlands
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Spalled Chalk Near Castle Rock (2008)
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Spalled Ogallala Formation Mortar Beds
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Castle Rock
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Eroded Niobrara Chalk and Shale
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Coronado Heights
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Wellington Formation-Kiowa Formation Contact
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Castle Rock (1997)
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Ogallala Formation Outcrop
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Monument Rocks
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