South Korea most of which is not arable. Lowlands, located primarily in the west and southeast, make up only 30% of the total land area. About three thousand islands, mostly small and uninhabited, lie off the western and southern coasts of South Korea. Jeju-do is about off the southern coast of South Korea. It is the country's largest island, with an area of . Jeju is also the site of South Korea's highest point: Hallasan, an extinct volcano, reaches above sea level. The easternmost islands of South Korea include Ulleungdo and Liancourt Rocks (Dokdo/Takeshima), while Marado and Socotra Rock are the southernmost
Aluchin (volcano) soil on the lava flows and the growth of trees on them. This makes Aluchin one of the few continental Asian volcanoes with activity during the Holocene. The formation of the Alpha cone was characterized by an alternation of explosive and effusive activity. The Anyuy volcano lies farther north. Aluchin (volcano) Aluchin is a volcano along the Aluchin River in the Chukotka of Russia. The volcano was discovered in 1956–1957 by G.K. Kleshchev. The volcano is formed by three cones, named Alpha, Beta and Gamma, which occur along a fissure. Alpha, the main cone, formed within a river valley. It