The waterfall of Dai Yem (Pink Blouse), also known as Nang or Ban Vat, is located in Muong Sang Commune in Moc Chau District in Son La Province.
If you visit Moc Chau town, you will have opportunities to watch the magical beauty which nature has granted to this area, and live in a primeval scene of the early days of life on earth.
Dai Yem waterfall is a historical landscape, which is closely related to the history of Thai people in Muon Sang land a long time ago. The name Dai Yem is derived from a story about the brassiere of the girl who saved a boy from the flood.
The Vat spring which flows to the waterfall has a length of about 5km. Water fills the spring year round. When it flows to this part, the spring is blocked by a limestone wall, and the water is stagnant and flows back to the lower bank. Bo Sap is a large spring, which derives from Bo Sap village near the border of Vietnam and Laos in Yen Chau land.
Back to the upstream of the spring, tourists can reach the first waterfall. The internal parts of the spring have many small and medium rocks with various strange shapes. In the rainy season (April to September), the entire 70m width is a white curtain flowing to the river, a poetic scene. The second waterfall has only one line from a height of 50m. Many trees at the top of the waterfall create a grand landscape.
The waterfall includes two levels of falls with the second located 150 meters at an angle below the first one. Above the second waterfall is a floral stretch of land from where visitors can view the surrounding mountainous view.
The Dai Yem Waterfall looks most stunning during the rainy season from April to September every year, when the 70-meter-wide fall gushes down its slope, looking a dazzling white and imposingly dramatic and poetic.