National Natural Landmark

NNL board for the Trona Pinnacles

NNL sign in Leonard Harrison State Park

National Natural Landmarks ( NNL , German  National Natural Monuments ) are geological and ecological objects in the United States that have been classified by the US Department of the Interior as significant to the natural history of the country. The program was launched on May 18, 1962 by then US Secretary of the Interior Stewart Udall . The properties designated as National Natural Landmarks can be in public or private ownership.

The list of National Natural Landmarks includes 599 properties (as of May 2020) in the states and the suburbs of American Samoa , Guam , Puerto Rico and the US Virgin Islands . Only in the states of Delaware and Louisiana are there no National Natural Landmarks. About half of the listed properties are owned by public authorities, i.e. federal, state, county , or municipal, one third is owned solely by private individuals, and the rest is mixed on public and private land. For this reason, some objects are not open to the public.

The National Natural Landmarks Program is administered by the National Park Service , which also supports the owners of the objects in protecting and maintaining them if necessary.

The legal basis for federal powers is the Historic Sites Act of 1935. National Natural Landmarks do not enjoy the protection status set out in the National Historic Preservation Act of 1966. A designation as NNL therefore only means an agreement with the owner to preserve the significant properties of the respective property if possible. Management and maintenance of the landmarks are the sole responsibility of the owners. The agreement can be terminated by either party.

Overview of the National Natural Landmarks

This list gives an overview of the distribution and number of National Natural Landmarks in the states or outlying areas. For the respective objects see the list of the associated area.

	State or Territory	Number of National Natural Landmarks	image
1	Alabama	7th
2	Alaska	16
3	American Samoa	7th
4th	Arizona	10
5	Arkansas	5
6th	Colorado	15th
7th	Connecticut	8th
8th	Delaware	0
9	Florida	18th
10	Georgia	11
11	Guam	4th
12	Hawaii	7th
13	Idaho	11
14th	Illinois	18th
15th	Indiana	30th
16	Iowa	7th
17th	California	36
18th	Kansas	5
19th	Kentucky	7th
20th	Louisiana	0
21st	Maine	14th
22nd	Maryland	6th
23	Massachusetts	11
24	Michigan	12
25th	Minnesota	8th
26th	Mississippi	5
27	Missouri	16
28	Montana	10
29	Nebraska	5
30th	Nevada	6th
31	New Hampshire	11
32	New Jersey	11
33	New Mexico	12
34	new York	28
35	North Carolina	13
36	North Dakota	4th
38	Ohio	23
39	Oklahoma	3
40	Oregon	11
41	Pennsylvania	27
42	Puerto Rico	5
43	Rhode Island	1
44	South carolina	6th
45	South Dakota	13
46	Tennessee	13
47	Texas	20th
48	Utah	4th
49	Vermont	12
50	American Virgin Islands	7th
51	Virginia	10
52	Washington	18th
53	Washington DC	0
54	West Virginia	15th
55	Wisconsin	18th
56	Wyoming	6th

See also

• National Historic Landmark

Remarks

1. ↑ ^{a b} Sand Creek is located in Colorado and Wyoming
2. ↑ ^{a b} Bartholomew's Cobble is located in Connecticut and Massachusetts
3. ↑ ^{a b} Ohio Coral Reef is located in Indiana and Kentucky
4. ↑ ^{a b} Cranesville Swamp Nature Sanctuary is located in Maryland and West Virginia
5. ↑ ^{a b} Ancient River Warren Channel is located in Minnesota and South Dakota
6. ↑ ^{a b} Palisades of the Hudson is in New Jersey and New York
7. ↑ ^{a b} Chazy Fossil Reef is located in Vermont and New York

Individual evidence

1. ↑ ^{a b c} National Park Service: National Natural Landmarks Directory , accessed on May 3, 2020 (English)
2. ^ Roscommon Red Pines, Department of Natural Resources.

Web links

Commons : National Natural Landmarks  - collection of images, videos and audio files

• Official website of the National Natural Landmarks Program