Located in the Erawan National Park area. It was originally called Sadong Monglai Waterfall. According to the name of the water source that originates from Huai Mong Lai in the Salab Mountain Range. The water flows from the top of a high mountain through limestone cliffs of various sizes, cascading down 7 levels. The cliff above the seventh-level waterfall is called Phu Pha Erawan; during times of strong waterfall flow. It will look similar to the head of a 3-headed elephant, also known as the “Erawan elephant,” which is the origin of the name “Erawan National Park.”