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
Irazú Volcano volcano is contained within the Irazú Volcano National Park, which spreads across 5,705 acres (2,300 ha). The national park contains both primary and secondary montane forests and is home to armadillos, owls, rabbits, foxes, woodpeckers, and hummingbirds. The irazu volcano is a complex volcanic shield. It is the highest active volcano in Costa Rica, and has an area of . It has an irregular subconic shape, and temperatures at its summit vary between , with a record low of -6 °C(21.2 °F) and a record high of 23 °C(73.4 °F). Irazu volcano is a stratovolcano with a summit elevation of