On top of that, the Joseon authorities adopted a rigorous isolationist plan, earning the nickname "the hermit kingdom", but eventually unsuccessful to protect by itself from imperialism and was forced to open its borders, starting an era foremost into Japanese imperial rule.

South Korea has two volcanic islandsJeju, off the peninsulas southern suggestion, and Ulleung, about 85 miles (one hundred forty km) east 파라곤 from the mainland from the East Seaand a small-scale lava plateau in Gangwon province.