The Lèng Khin Waterfall is located in Pouyam Village, Sèn Monorom Commune, Oreang District; 26 km away from the provincial town. It can be accessed by path.
Around the waterfall, most of the residents do farming. During the rainy season, the waterfall is 22-25 meters in height and 7-10 meters in diameter. During the dry season, the waterfall is 28 meters in height and 8 meters in diameter. It is one of the highest flowing-down waterfalls in the Mondul Kiri province. At its base, there is a big water reservoir in which tourists can swim happily. Besides, there are many big trees providing cool shade for them.
Its main points of interest are a spectacular waterfall, dramatic mountainous forest, impressive undulating hills, and fresh air.