prominent peaks of the range include mount seoraksan (1,708 m), mount kumgangsan (1,638 m), mount taebaeksan (1,566.7 m) and mount odaesan (1,563 m). to the east, the mountain range falls steeply into the sea, but to the west, there are more gentle slopes. many spurs stretch southwest. the most important rivers of south korea, the han river and the nakdong river, both originate in the taebaek mountains.