El Triunfo Biosphere Reserve

UNESCO Biosphere Reserve, inscribed 1993, in Mexico. El Triunfo is situated in the mountains of the Sierra Madre de Chiapas in the south of the state of Chiapas, in generally steep and mountainous terrain. The reserve forms the boundary between two of the largest hydrological regions of the state: the Pacific coast and the Grijalva–Usumacinta River. As a primary Pleistocene refuge, and due to its location in the Sierra Madre de Chiapas, it is considered an endemic area for different groups of plants and animals. El Triunfo is the most diverse evergreen cloud forest in Mexico and one of the most important sites for bird migration. It is covered with evergreen seasonal forest, montane rainforest and lower montane rainforest, which contain a higher proportion of endemic plants. A number of threatened mammalian species can be found in the reserve, namely Geoffroy’s spider monkey, margay, jaguar and puma.