It is an ecological reserve located in Santa María Chimalapas, considered one of the few places where important ecosystems have been preserved, including jungle, mountain forest, and precious wood forest. In the Zoque language, Chimalapa means "golden gourd.".

The reserve covers 595,000 hectares and is home to 150 mammal species, 350 bird species, 60 reptile species, 50 amphibian species, 16 dragonfly species, and 500 butterfly species. 595.000 hectáreas, en donde habitan 150 especies de mamíferos, 350 de aves, 60 de reptiles, 50 de anfibios, 16 de libélulas y 500 de mariposa.

In order to get to the jungle, you have to take a two-hour walk, and to venture deeper, an eight-hour hike is required.