The Ro Abiseo region was declared a National Park on August 11, 1983 through Law (D.S.) N 064-83-AG and in 1990 it was recognised as a Cultural and Natural Inheritance of Humanity by UNESCO.

This park is located in the department of San Martn, province Mariscal Caceres, district of Hurcungo with a surface of 274,520 hectares.

In this park there are seven life zones that differ because of their altitude, which in the Rio Abiseo goes from 350 to 4200 meters of altitude with very diversed flora and fauna. The foggy forests have a very rich multiplicity of plants enclosed in their tropical and humid forests. Its flora includes brakens, orchids, canes and mosses.
There are 261 types, 105 families of fauna and 1,000 types of flora.

The following are some of the mammals we can find: mono choro de cola amarilla (Lago thrix flavicauda), picuro de montaa (Agouti tazzanowskii), Taruca (Hippocamelus antisemsis), spectacled bear (Tremarctos ornatus), jaguar (Panthera onca) and the maquisapa (Ateles belzebuth), among others.

The variety of birds is immense: Guan (Crax salvini), the king vulture (Sarcoramphus pampa), the yellow head parrot (Amazona ochrocephala) and the wild duck (Netta erythrophthalma) are but examples.

This national park of Rio Abiseo offers very rich ecological resources. But that is not all. In it 36 archaeological sites have been registered and constitute the very well known and impressive Gran Pajaten, considered as a monumental complex that can only be compared to the Tikal National Park in Guatemala.

The main goal of the park, is to protect the foggy forests that are formed adjacent to the rainforest, and the mono choro de cola amarilla (yellow tall monkey).