Cañón del Sumidero
This is a long canyon, with steep sides up to 1km high. There is a river running the length of it, upon which boat tours are run.
Flora and fauna
An all inclusive tour from San Cristobal de las Casas costs 300 pesos in high season (as of July 2013). You can also take a colectivo (45 pesos) or a bus (25 pesos) towards Tuxtla Gutiérrez and ask the driver to drop you near Chiapa de Corzo. Cross the road and take another colectivo (6 pesos) to the 'embarcadero' where you buy a boat ticket for 160 pesos. The boatride takes about two hours, so bring drinking water, a hat and sunscreen. Consider wearing long pants and long sleeves, since the wind can make the warmest day feel chilly when the sun hides behind a cloud. Also, the boats bounce a lot when they speed up, which is not entirely pleasurable for those with sensitive backs. A smaller (slower) boat might be more comfortable.
160 pesos for a boatride.
Crocodiles and birds in beautiful nature.