Nam Tok Thi Lo Su in Umphang Wildlife Sanctuary, Thailand (© Apisit Sriputtirut/Alamy)

【June 18 2014】In English, it’s the Black Water Waterfall, presumed to be the largest in Thailand, beginning some 820 feet up the cliff. A common anglicized pronunciation of the falls' Thai name is Nam Tok Thi Lo Su. It’s part of the Mae Klong River, and the falls portion runs through the Umphang Wildlife Sanctuary on the western edge of Thailand near Myanmar.Explore breathtaking Gallery from the HuluTrip homepage over the past 5 years..