Kbal Chhay Waterfall.

Kbal Chhay waterfall is located in Khan Prey Nup, about 16 kilometers north of downtown Sihanoukville, To reach the site from Sihanoukville, take National Road 4 toward Phnom Penh. About 7 kilometers outside of town, there is a sign announcing the site. Turn left and go 9 kilometers along a trail. The water at Kbal Chhay comes from many sources along the mountain range, although only three of these sources are visible. The waterfall, which is 14 meters high, is at the point where those three sources join.

Kbal Chhay was discovered in 1960. Three years later, it was developed into a reservoir to supply clean water to the city of Sihanoukville. The reservoir construction, however, was interrupted due to civil war, and the site became a hide-out for the Khmer Rouge. In 1997, Kbal Chhay was marked for development, and a year later Kok An Company was awarded a contract to construct a road and develp the site for tourism.