Emerald Cave, one of the goals of going to the sea, located in Koh Libong Subdistrict, Kantang District, Trang Province, is an area of ​​sea caves. which is very beautiful and magnificent We can enter the cave from the entrance. Which is just a small hole, so we have to rely on the time of the tide. Because when the water is low, this hole will be above the water level, so small boats can fit through it. But if the water is high, you will have to swim in it.