Korean Geographic | 코리언 지오그래픽 - Ep.2 : A Volcanic island covered in green ()

Ep.2 : Jeju-do is filled with hills made from lava called “oreum.“ Under there hills are caves that are growing little by little every day. Come explore these places that were created by nature a million years ago. ------------------------------------------------- Subscribe KBS World Official YouTube: ------------------------------------------------- KBS World is a TV channel for international audiences provided by KBS, the flagship public service broadcaster in Korea. Enj