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| Monument Rocks, Kansas © Doug Hickok All Rights Reserved In the least expected places, one may find monumental sights, such as this cluster of "chalk pyramids" that rise above the tall grass prairie of Kansas. Formed 80 million years ago, these layers of limestone are full of small fossil shells from when this area was an ancient inland sea. These formations are a reminder that in the big geologic picture, our Earth is in constant flux. |