Introduction to Hyeopjae Cave: Located 200 meters east of Hyeopjae Beach, it is a "living" cave to this day. In the dark lava cave that has been formed, the part containing lime gradually turns into a golden lime cave. Moreover, there are lime powder patterns on the cave wall, which looks like a huge mural. Hyepcai Cave is one of the three largest caves in the world, along with Peru's Rock Salt Cave and Yugoslavia's Sea Lime Cave.