Seongsan Ilchulbong Peak created by an undersea volcanic eruption Seongsan Ilchulbong Peak is located in the easternmost part of Jeju Island and was created when a shallow underwater volcano erupted 100,000 years ago. Its height is 182 meters, its circumference is 1.5 kilometers, and the volcano surrounded by cliffs looks like a crown from a distance. In addition, the crater of Seongsan Ilchulbo..
