The Misol-Ha Waterfall
Misol-Ha: (Near Palenque) - The River Misol-Ha (meaning "Streaming Water"), creates one of Chiapas' most wonderful natural sights. The river falls off the edge of a 120 foot cliff into a deep pool surrounded by lush vegetation. The water at the foot of the waterfall is 45 feet deep. You should only swim here if you are a good swimmer, and children should be watched carefully. The water is deliciously refreshing.
A small walkway will take you behind the curtain of water created by the waterfall. There are caves behind the falls where you will find local guides who will give you a tour (for a small tip.)