‘Tan Sadej’ waterfall is located in Pa-Ngan Island, Surat Thani Province. It is a large scale waterfall that has been famous and widely known for a long time and also an ever popular tourist destination for tourists who come to visit the Island.
In the past, this waterfall was unknown to outsiders. Even in the map which was made at the beginning of King Rama V's reign, there was no sign of waterfall indicated. Instead, it was stated that the place was just a freshwater pond.
When the King went to Pa-Ngan Island in 1889, he was interested in visiting this freshwater pond as stated in the map but once arriving there, he found out that the place, actually, was a very beautiful waterfall which was suitable for relaxation. So, he named this waterfall ‘Tan (= water) Sadej (= visit (royal word))’.
The place proved to be his favorite for records say that he had visited this place for 14 times.
(This computer colored photo shows the King casually bathed in this waterfall in 1905)