Tier 6 of the 7-tiered Huay Mae Khamin series of waterfalls, in Kanchanaburi, Thailand.
Huay Mae Khamin is in the same area as the far more frequently visited Erawan falls, but sees far fewer visitors due to its more remote location.
25mm f/11, 1-second exposure.
Full image, or cropped to 16:9 to draw the eye in a bit more?