As the mountainous location is totally on the eastern Element of the peninsula, the most crucial rivers tend to stream westwards. Two exceptions are the southward-flowing Nakdong 토토 River and Seomjin River.
South Korea has two volcanic islandsJeju, off the peninsulas southern idea, and Ulleung, about eighty five miles (140 km) east on the mainland within the East Seaand a small-scale lava plateau in Gangwon province.