Moreover, the Joseon govt adopted a demanding isolationist policy, earning the nickname "the hermit kingdom", but in the long run failed to guard alone against imperialism and was forced to open up its borders, commencing an era foremost into Japanese imperial rule.
South Korea has two volcanic islandsJeju, off the peninsulas southern idea, and Ulleung, about 85 miles (a hundred and forty km) east from the mainland during the East Seaand a small-scale 파라곤 lava plateau in Gangwon province.