Than Mayom is a famous fourth-order waterfall on the island of Koh Chang. The waterfall is located in the Koh Chang National Park. The pool below the waterfall is not very deep, the water is cool and you can go for a swim. Because it is located in the tropics, the forest vine plants cover everywhere, entwined with each other. It is because of them that there is sufficient water nourished to have a picturesque waterfall landscape.