"Seongsan Ilchulbong is formed by three volcanic eruptions".

A new fact has been revealed that Seongsan Ilchulbong Peak was formed by three volcanic eruptions, not one.

The Jeju World Heritage Headquarters said the research team confirmed this through an undersea topography exploration near Seongsan Ilchulbong Peak.

The research team found a circular flat-structured terrain with a diameter of 600m on the seabed, about 600m southeast of the center of Seongsan Ilchulbong Peak.

Scrutiny revealed that two underwater volcanic eruptions 6,700 years ago formed early volcanic bodies.

The research team concluded that a new crater was formed 5,000 years ago at the site of Seongsan Ilchulbong Peak, creating a complex volcanic body in which three volcanoes overlap, and that it became the current Seongsan Ilchulbong Peak due to erosion.

Until now, Seongsan Ilchulbong Peak has been known as a single volcanic body formed by a one-time eruption.

The results of the study were published in the internationally credible Scopus-listed journal.