There are five National Natural Landmarks in Kansas.
Name Image Date Location County Ownership DescriptionHaskell-Baker Wetlands Douglas Private An example of undisturbed wetland prairie. Baldwin Woods Douglas Private A unique remnant oak-hickory stand. Big Basin Prairie Preserve Clark State Excellent examples of collapse features formed by groundwater geological processes. Monument Rocks Gove Private Pinnacles, small buttes, and spires of Niobrara formation chalk. Rock City Ottawa Private A unique cluster of about 200 great spherical sandstone concretions.
See also
List of National Historic Landmarks in Kansas