What are national natural landmarks?

Some articles on national natural landmarks, natural, national:

List Of National Natural Landmarks In Wyoming
... From List of National Natural Landmarks, these are the National Natural Landmarks in Wyoming ... Crooked Creek Natural Area 1966 Big Horn A rich source of fossils of Early Cretaceous land vertebrates ... Sweetwater Teton Uinta Washakie Weston National Natural Landmarks in the United States Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware ...
List Of National Natural Landmarks In Indiana
... From List of National Natural Landmarks, these are the National Natural Landmarks in Indiana Name Image Date Location County Description Big Walnut Creek 01968-01-011968 Putnam Contains one of the few stands in ... Cowles Bog 01965-01-011965 Chesterton Porter Part of the Indiana Dunes National Lakeshore, this is the sole remaining remnant of the Central Dunes where Henry Chandler. 01986-01-011986 Wabash Contains an impressive natural exposure of fossilized coral reef dating from the Silurian Period some 400 million years ago ...

Famous quotes containing the words landmarks, national and/or natural:

    Of all the bewildering things about a new country, the absence of human landmarks is one of the most depressing and disheartening.
    Willa Cather (1873–1947)

    All experience teaches that, whenever there is a great national establishment, employing large numbers of officials, the public must be reconciled to support many incompetent men; for such is the favoritism and nepotism always prevailing in the purlieus of these establishments, that some incompetent persons are always admitted, to the exclusion of many of the worthy.
    Herman Melville (1819–1891)

    A man must find his occasions in himself, it is true. The natural day is very calm, and will hardly reprove his indolence.
    Henry David Thoreau (1817–1862)