Chet Sao Noi’s troubling history also adds to its overall eerie vibe. A local legend states that the falls were named after seven child sisters who tragically drowned while swimming in one of the pools (chet means “seven” and sao noi, “little girls”). Although the falls may simply be named after its seven separate steps, the story doesn’t seem far-fetched. While some pools are safe, there’s a strict no-swimming policy on others due to powerful undercurrents that have (according to one local at least) caused a handful of drownings in more recent years. Particularly towards the middle and end of rainy season from July to October, swimming in the lower pools is not considered safe.