c/National Natural Landmarks in Illinois

Information
lexicalization	eng: National Natural Landmarks in Illinois
subclass of	(noun) the position of a prominent or well-known object in a particular landscape; "the church steeple provided a convenient landmark" landmark
has instance	e/Heron Pond – Little Black Slough Nature Preserve
has instance	e/List of National Natural Landmarks in Illinois
has instance	e/Ned Brown Forest Preserve
has instance	e/Robert Allerton Park