Erawan waterfall. The 7 levels of this stunning waterfall drops 1,500 m. down steep-sided cliffs. It is surrounded by beautiful forest with many types of trees and orchids. There is a trail as far as the 6th level and from there you have to scramble up the cliff to reach the 7th level. The climb is well worth the effort, for the sight of tumbling water, spraying off the boulders into the deep pool below. Located in Erawan National Park, the park is a 550-square-kilometer park in western Thailand located in Kanchanaburi Province, Amphoe Si Sawat in the tambon Tha Kradan. Founded in 1975, it is Thailand's 12th national park.