List of National Natural Landmarks in Alaska
Encyclopedia
There are 16 National Natural Landmark
National Natural Landmark
The National Natural Landmark program recognizes and encourages the conservation of outstanding examples of the natural history of the United States. It is the only natural areas program of national scope that identifies and recognizes the best examples of biological and geological features in...

s in Alaska
Alaska
Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait...

.
Name Image Date Location County Description
1 Aniakchak Crater King Salmon
King Salmon, Alaska
King Salmon is a census-designated place in Bristol Bay Borough in the U.S. state of Alaska. As of the 2000 census the population was 442...

 56.905833°N 158.208889°W
Lake and Peninsula Borough
Lake and Peninsula Borough, Alaska
-National protected areas:* Alagnak Wild River* Alaska Maritime National Wildlife Refuge ** Sutwik Island* Alaska Peninsula National Wildlife Refuge * Aniakchak National Monument and Preserve...

Part of the rarely visited Aniakchak National Monument and Preserve
Aniakchak National Monument and Preserve
Aniakchak National Monument and Preserve is a U.S. National Monument and National Preserve, consisting of the region around the Aniakchak volcano on the Aleutian Range of south-western Alaska....

, this 3,400 year old volcanic caldera
Caldera
A caldera is a cauldron-like volcanic feature usually formed by the collapse of land following a volcanic eruption, such as the one at Yellowstone National Park in the US. They are sometimes confused with volcanic craters...

 last erupted in 1931.
2 Arrigetch Peaks
Arrigetch Peaks
The Arrigetch Peaks are a cluster of rugged granite spires in the Endicott Mountains of the central Brooks Range in northern Alaska. The name Arrigetch means 'fingers of the outstretched hand' in the Inupiat language. The peaks ring the glacial cirques at the head of the Kobuk River and 2...

Alaska Conspicuous granite pinnacles rise thousands of feet above the surrounding glacial valleys of tundra and boreal forest.
3 Bogoslof Island
Bogoslof Island
Bogoslof Island or Agasagook Island is the summit of a largely submarine stratovolcano located in the Bering Sea in the U.S. state of Alaska, behind the main Aleutian volcanic arc. It has a land area of and is unpopulated. The peak elevation of the island is...

Alaska A prime example of volcanism at work.
4 Clarence Rhode National Wildlife Range Alaska A excellent example of coastal and upland tundra habitat.
5 Iliamna Volcano Kenai Peninsula Borough, Alaska Active stratovolcano with a 10016 feet (3,052.9 m) summit and at least 10 glaciers.
6 Lake George Alaska At the time of its designation, Lake George was the largest glacier- dammed lake in North America.
7 Malaspina Glacier
Malaspina Glacier
The Malaspina Glacier in southeastern Alaska is the largest piedmont glacier the world. Situated at the head of the Alaska Panhandle, it is about wide and long, with an area of some . It is named in honor of Alessandro Malaspina, an Italian explorer in the service of the Spanish Navy, who visited...

Alaska The largest piedmont glacier in North America
8 McNeil River State Game Sanctuary Kenai Peninsula Borough, Alaska Concentration of bears fishing at the falls provides a world renowned bear viewing opportunity.
9 Mount Veniaminof
Mount Veniaminof
Mount Veniaminof is an active stratovolcano located on the Alaska Peninsula. The Alaska Volcano Observatory currently rates Veniaminof as Aviation Color Code GREEN and Volcano Alert Level NORMAL as of 15:36, 3 June 2009...

Alaska Contains a cupped ice field of 25 square miles (64.75 km²), the most extensive crater- glacier in the nation.
10 Redoubt Volcano
Alaska Second highest of the 76 major volcanoes of the Alaska Peninsula and Aleutian Islands.
11 Shishaldin Volcano
Alaska Explosive stratovolcano
Stratovolcano
A stratovolcano, also known as a composite volcano, is a tall, conical volcano built up by many layers of hardened lava, tephra, pumice, and volcanic ash. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile and periodic, explosive eruptions...

 with a near perfect cone.
12 Simeonof National Wildlife Refuge Alaska An ancestral hauling ground for sea otters.
13 Unga Island
Unga Island
Unga Island is the largest of the Shumagin Islands off the Alaska Peninsula in southwestern Alaska, USA. The island has a land area of 170.73 sq mi , making it the 35th largest island in the United States...

Alaska Petrified logs and stumps along the shores are remnants of a sequoia
Sequoia (genus)
Sequoia is a genus of redwood coniferous trees in the Sequoioideae subfamily, of the Cupressaceae family. The only extant species of the genus is the Sequoia sempervirens in the Northern California coastal forests ecoregion of Northern California and Southern Oregon in the United States...

 or metasequoia
Metasequoia
Metasequoia is a fast-growing, deciduous tree, and the sole living species, Metasequoia glyptostroboides, is one of three species of conifers known as redwoods. It is native to the Sichuan-Hubei region of China. Although the least tall of the redwoods, it grows to at least 200 feet in height...

 forest.
14 Walker Lake Alaska A striking and scenic example of a mountain lake at the northern limit of forest growth.
15 Walrus Island Alaska The southernmost primary haul-out area for bull walruses
16 Worthington Glacier
Worthington Glacier
The Worthington Glacier is a glacier located adjacent to Thompson Pass in the southeastern mainland section of the U.S. state of Alaska. Located on the Richardson Highway miles north of Valdez, it was listed as a National Natural Landmark in 1968...

Alaska One of the most road accessible glaciers in Alaska.
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