AAA Editor Notes
Monument Rocks (Chalk Pyramids) are 20 mi. s. on US 83, then 4 mi. e. on a dirt road. Remnants of layer after layer of Cretaceous seabed, the wind-carved, water-eroded chalk pinnacles rise some 70 feet above the plain. This natural formation served as a landmark for pioneers and Native Americans. Weathering has revealed a great variety of marine and reptilian fossils. Chalk bluffs and similar formations are characteristic of the Smoky Hill River Valley from this region east to Cedar Bluff Reservoir.
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