Is an área of rainforest which stretches from Chiapas, Mexico into Guatemala and into the southern part of the Yucatán península. The heart of this rainforest is locatedin the Montes Azules Biosphere Reserve in Chiapas near the border withe Guatemala in the Montañas del Oriente región of the state.
It contains 1,500 tree species, 33% of all Mexican bird species, 25% of all Mexican animal species, 44%of all Mexican diurnal butterflies and 105 all Mexico´s fish species.
