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The National Natural Landmarks ( NNL) Program recognizes and encourages the conservation of outstanding examples of the natural history of the United States. [ 1] It is the only national natural areas program that identifies and recognizes the best examples of biological and geological features in both public and private ownership.
Two of the NPS's national monuments, Grand Canyon–Parashant and Avi Kwa Ame, are not official units because they overlap with Lake Mead National Recreation Area. Management practices vary across agencies and sites according to their missions, the size or type of protected place, and legal authorization.
Most landmark designations are in one of the 50 states. New York is the state with the most (270), and New York City, with 114 designations, is the city with the largest number of designations. Of the states, North Dakota has the fewest designations with seven. Three cities (New York City, Philadelphia, and Boston) have enough listings to ...
Monroe. Municipal. Contains a pristine stand of beech-maple forest, a climax forest dominated by the American beech and sugar maple which covered most of the Northeastern United States when it was settled. 12. Hook Mountain and Nyack Beach State Park. April 1980.
This is a list of National Historic Landmarks in U.S. commonwealths and territories, associated states, and foreign states. Included are lists of National Historic Landmarks (NHLs) and of National Park Service administered areas in U.S. Commonwealths and territories, U.S.-associated states, and in the foreign state of Morocco.
These landmarks were designed between 1967 and 1987. They vary in size between 44 and 53,531 acres (18 and 21,663 hectares). The National Natural Landmarks Program is administered by the National Park Service, a branch of the Department of the Interior. The National Park Service determines which properties meet NNL criteria and, after notifying ...
List of National Historic Landmarks in Washington; References General "National Natural Landmarks by state: Washington". National Park Service "National Registry of Natural Landmarks" (PDF). National Park Service. June 2009. pp. 100–103; Footnotes
The Redoubt Volcano was designated a National Natural Landmark in 1976, and erupted in 1990. The National Natural Landmarks in Alaska include 16 of the almost 600 National Natural Landmarks (NNLs) in the United States. They cover areas of geological and biological importance, and include craters, volcanoes, glaciers, lakes, islands and habitats ...