Wikipedia
Ulleung-do (also spelled Ulreungdo; ) is a South Korean island 120 km (75 mi) east of the Korean Peninsula, formerly known as the Dagelet Island or Argonaut Island in Europe, Dingbian (定邊) in China, and Utsuryo (鬱陵島) in Japan. Volcanic in origin, the rocky steep-sided island is the top of a large stratovolcano which rises from the seafloor, reaching a maximum elevation of at Seonginbong Peak. The island is in length and in width; it has an area of . It has a population of 10,426 inhabitants.
The island makes up the main part of Ulleung County, North Gyeongsang Province, South Korea and is a popular tourist destination. The main city of Ulleung-do is the port of Dodong (도동/), which serves as the main ferry port between Ulleung-do and the Korean mainland. After tourism, the main economic activity is fishing, including its well-known harvest of squid, which can be seen drying in the sun in many places.