Ulleung County

islands that has two main island made out of rocks between Japan and Korea

Ulleungdo (), also spelled Ulreungdo, is a South Korean island east of the Korean Peninsula in the Sea of Japan. It was formerly known as Dagelet Island or Argonaut Island in Europe. 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.

county of South Korea

island