Among the few natural attractions that I went to on Jeju Island, I like the Manjanggul Cave the best. While it might not look like much, I think it is a super cool place because it used to be where molten hot lava was flowing through. Sorry, Geography geek in me is very excited. #NotSorry XD Also, along the walls of the tunnel, you can … Continue reading Jeju Island Adventure: Manjanggul Cave