The Tham Mayom Waterfall is located in Mu Ko Chang National Park. This medium-sized waterfall has four levels, with the third level being the most beautiful. Both King Rama V and King Rama VII, along with Her Majesty Queen Rambhaibarni, have visited this waterfall, leaving their initials carved into the rock face at the top level of Tham Mayom Waterfall. To reach it, one must walk approximately 500 meters through the gardens behind the national park office at Koh Chang 1 (Tham Mayom).