Geologic Formations

Cracked Cliffs
Cracked Cliffs

NPS photo

The cliffs along the Niobrara River reveal millions of years of the earth's history. For a description of this geological "layer cake", click to download a PDF of our geology bulletin.

You will need Acrobat Reader to open this file. Acrobat is free, and you can download it here.

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214 W US Highway 20
Valentine, NE 69201


(402) 376-1901
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