Deep in the jungles of Chiapas turquoise rivers emerge from deep springs. Agua Azul is a series of cascades and pools found just off the road between Ocosingo and Palenque. Closer to Palenque, and equally accessible, is Misol Ha, a dramatic waterfall from great heights into a deep pool.
At Agua Azul there are vendors selling swimming attire, food, clothing, and trinkets, plus a few excellent restaurants. Helicopter rides are available for a sweeping vista of the region where turquoise ribbons of water course through deep green jungle.
You can swim in the pools, but the water is quite cold. It's a great place to spend an afternoon or longer, as there are many hiking trails into the jungle.