Islands of Four Mountains is an island

Island

An island or isle is any piece of sub-continental land that is surrounded by water. Very small islands such as emergent land features on atolls can be called islets, cays or keys. An island in a river or lake may be called an eyot , or holm...

 grouping of the Aleutian Islands 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...

, United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. The chain includes, from west to east, Amukta, Chagulak

Chagulak Island

Chagulak Island is a small, uninhabited volcanic island in the Islands of Four Mountains group in the Aleutian Islands of southwestern Alaska, United States. The -wide island consists of a single cone that reaches an elevation of 3,747 ft...

, Yunaska

Yunaska Island

Yunaska is the largest of the Islands of Four Mountains group in the Aleutian Islands of southwestern Alaska, United States. It has a land area of 66.834 sq mi and no population at the 2000 census....

, Herbert

Herbert Island

Herbert Island is an island in the Islands of Four Mountains subgroup of the Aleutian archipelago. It is from Chuginadak Island, separated by the Chuginadak Pass...

, Carlisle

Carlisle Island

Carlisle Island is an island in the Islands of Four Mountains subgroup of the Aleutian archipelago. It is across the Carlisle Pass from Chuginadak Island and is northeast of Herbert Island. Carlisle Island has as diameter of and is dominated by the conical stratovolcano of the same...

, Chuginadak

Chuginadak Island

Chuginadak Island is the largest island in the Islands of Four Mountains subgroup of the Aleutian archipelago. Chuginadak is an Aleutian name published by Captain Tebenkov in an 1852 map...

, Uliaga

Uliaga Island

Uliaga Island is the northernmost member of the Islands of the Four Mountains group in the Aleutian Islands of southwestern Alaska...

, and Kagamil Island

Kagamil Island

Kagamil Island , in the Islands of Four Mountains subgroup of the Aleutian archipelago, is north of Chuginadak Island and south of Uliaga Island. It is in length and up to in width. The southern half of the island is dominated by the Kagamil Volcano, which has two summits: one is above sea...

s. This island chain is located between Amukta Pass

Amukta Pass

Amukta Pass is a wide strait between the Bering Sea and the North Pacific Ocean in the Aleutian Islands in Alaska. It lies between Amukta Island to the east and Seguam Island to the west.- 2011 earthquake :...

 and the Andreanof Islands

Andreanof Islands

The Andreanof Islands are a group of islands in the Aleutian Islands in southwest Alaska. They are located between Amchitka Pass and the Rat Islands group to the west, and Amukta Pass and the Islands of Four Mountains group to the east, at about 52° North and 172°57' to 179°09' West. The islands...

 to the west, and Samalga Pass and the Fox Islands

Fox Islands (Alaska)

The Fox Islands are a group of islands in the eastern Aleutian Islands of the U.S. state of Alaska. The Fox Islands are the closest to mainland North America in the Aleutian chain, and just east of Samalga Pass and the Islands of Four Mountains group....

 to the east. These islands have a total land area of 210.656 sq mi (545.596 km²) and have no permanent population. The two largest islands are Yunaska and Chuginadak. Chuginadak is mainly made up of the active volcano Mount Cleveland.

The name is translated from Russian Четырехсопочные Острова (Ostrova Chetyre Soposhnye) meaning "Islands of Four Volcanoes" (Sarichev, 1826, map 3) and was applied by the early Russian explorers because of four prominent volcano

Volcano

2. Bedrock3. Conduit 4. Base5. Sill6. Dike7. Layers of ash emitted by the volcano8. Flank| 9. Layers of lava emitted by the volcano10. Throat11. Parasitic cone12. Lava flow13. Vent14. Crater15...

es located on four of the islands. The Aleut name "Unigun" (Uniiĝun in the modern Aleut

Aleut language

Aleut is a language of the Eskimo–Aleut language family. It is the heritage language of the Aleut people living in the Aleutian Islands, Pribilof Islands, and Commander Islands. As of 2007 there were about 150 speakers of Aleut .- Dialects :Aleut is alone with the Eskimo languages in the...

 orthography) was reported in 1940 by Father Veniaminov. There appears to be confusion regarding the names of these islands, possibly because only four of the five are on most early maps and charts. The present names were gathered in 1894 by a field party on the USS Concord

USS Concord (PG-3)

USS Concord was a member of the of steel-hulled, twin-screw gunboats in the United States Navy in the late 19th and early 20th centuries. She was the second U.S. Navy ship named in honor of the town of Concord, Massachusetts, site of the Battle of Concord in the American Revolutionary War.The...

and published in 1895 by the U.S. Navy Hydrography Office (Chart 8).
This is the first island in the aleutian time zone 1 hour behind Alaska with daylight savings time as of 2010.