Monument Rocks Grinnell

1545 04/05/2015 5
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Monument Rocks Grinnell

Monument Rocks National Natural Landmark Grinnell, Kansas, United States/Eighty million years ago, western Kansas was underwater; the remains of what lived in the sea then turned into chalk, eventually eroding into the large rocks that now tower over the flat countryside.From: AERIAL AMERICA: Kansas Smithsonian Channel