The eastern mountains rise to 996 meters with shear limestone cliffs. Mixed species deciduous forests with occasional stands of bamboo characterize the park. More than 80 species of bird have been sighted, as well as gibbon, slow loris, macaque and rhesus monkey. The highlight of the park is undoubtedly the Erawan waterfall, a beautiful multi-level waterfall. Bungalow accommodations, camping facilities and a daytime food market are available.
The Erawan waterfall is the main attraction of the park. Its 7 levels fall drops 1,500 meters 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 visitors 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. The uppermost fall is said to resemble Erawan (the three-headed elephant of Hindu mythology), which gives the whole waterfall its name.