Jeju Island (Jeju: 제주도; ; ) is South Korea's largest island, covering an area of , which is 1.83 percent of the total area of the country. It is also the most populous island in South Korea; at the end of September 2020, the total resident registration population of Jeju Province is 672,948, of which 4,000 reside on outlying islands such as the Chuja Islands and Udo Island. The total area of the Jeju Special Self-Governing Province is 1,849 km. The island lies in the Korea Strait, south of the Korean Peninsula, and South Jeolla Province. It is located off the nearest point on the peninsula. Jeju is the only self-governing province in South Korea, meaning that the province is run by local inhabitants instead of politicians from the mainland. Jeju Island has an oval shape of east–west and north–south, with a gentle slope around Mt. Halla in the center. The length of the main road is and the coastline is . The northern end of Jeju Island is Kimnyeong Beach, the southern end is Songak Mountain, the western end is Suwolbong, and the eastern end is Seongsan Ilchulbong. The island was formed by the eruption of an underwater volcano approximately 2 million years ago. It contains a natural World Heritage Site, the Jeju Volcanic Island and Lava Tubes. Jeju Island has a temperate climate which is moderate; even in winter, the temperature rarely falls below . Jeju is a popular holiday destination and a sizable portion of the economy relies on tourism and related economic activity. Etymology Historically, the island has been called by many different names including: Doi (, hanja: , literally "Island barbarian") Dongyeongju (; hanja: 東瀛州) Juho (, hanja: ) Tammora (탐모라, 耽牟羅) Seomna (섭라, 涉羅) Tangna (탁라, 乇羅) Tamna (탐라, 耽羅) Quelpart, Quelparte or Quelpaert Island Junweonhado (준원하도, 준원下島 meaning "southern part of peninsula") Taekseungnido (, meaning "the peaceful hot island in Joseon") Samdado (, meaning "Island of Three Abundances") Before the Japanese annexation in 1910, the island was usually known as Quelpart (Quelpaërt, Quelpaert) to Europeans; during the occupation it was known by the Japanese name Saishū. The name Quelpart coming from French language is attested in Dutch no later than 1648 and may have denoted the first Dutch ship to spot the island, the quelpaert de Brack around 1642, or rather some visual similarity of the island from some angle to this class