51 additional natural caves in Jeju were identified.

According to the Jeju Island Cave Exploration, Survey, and Research Report, the Jeju Island Cave Research Institute has confirmed 209 natural caves in Jeju Island, including 178 lava caves and 31 marine caves.

The distribution of natural caves by region showed that 127 (lavas 116 · sea 11) were distributed in Jeju and 82 (lavas 62, 20) in Seogwipo.

This is 51 more than the 158 natural caves (127 lava and 31 seafood) found in 2003 jointly investigated by the Jeju Cave Research Institute and the Cultural Heritage Administration.

Jeju Island Cave Research Institute has continued to study for 16 years since 2003 and further confirmed natural caves distributed in Jeju Island.

The report says the number of caves may change, depending on the results of ongoing research.

In addition to the report, the Jeju Island Cave Research Institute also released the Jeju Island Cave Distribution System, which details the distribution of natural caves in satellite images.

In-seok Sohn, director of Jeju Island Cave Research Institute, said, "In the basement of Jeju Island, natural caves are distributed like human blood veins." I will do it. "

He also said, “We will also identify the relationship between the underground and the ground environment, and then check the stability issues between the cross-zones.

(Photo: Provided by Jeju Island Cave Research Institute)