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
Jocotitlán (volcano) activity in the region is. If it erupts, the volcano could pose a serious threat to Greater Toluca and even Greater Mexico City. The volcano can be easily climbed from the town of Jocotitlán. A winding 19 km country lane leads up to the microwave antenna located near the summit. Jocotitlán (volcano) Jocotitlán, also known as Xocotépetl (), is a volcano in the Jocotitlán and Atlacomulco municipalities, in the State of Mexico. At above sea level, its summit is the 12th highest peak of Mexico. Jocotitlán volcano lies in the northern part of the Toluca Valley. It is part of