Erawan National Park (fig.) in Kanchanaburi is home to the Erawan Waterfall (fig.), a cascade with a series of 7 falls. Level 2, seen here, is known as Wang Matcha, literally the ‘Palace [of the] Fish’.

The name refers to the fish that dwell in basin at the base of this cascade. Visitors can swim here and when resting in the water the fish will come over and nipple from any exposed skin taking many a bather by surprise when they are unexpectedly treated with this underwater massage.