The Río Abiseo National Park was established on August 11, 1983 through Law (D.S.) N 064-83-AG. In 1990 was declared as a Cultural and Natural Inheritance of the Humanity by UNESCO.

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

In this park are seven life zones going from 350 m.a.s.l. to 4200 m.a.s.l. with very varied flora and fauna. The foggy forests have a very rich variety of plants behind the tropical and humid forests. Its flora includes archids, brakens, canes and mosses. There are 261 types, 105 families and 1,000 types of flora.

We can also find the following mammals: mono choro de cola amarilla (Lago thrix flavicauda), picuro de montaña (Agouti tazzanowskii), Taruca (Hippocamelus antisemsis), spectaded bear (Tremarctos ornatus), jaguar (Panthera onca) and the maquisapa (A teles belzebuth).

With regard to birds, there are: paujil (Crax salvini),the jungle condor (Sarcoramphus popa), the yellow head parrot (Amazona ochrocephala) and the wild duck (Netta erythrophthalma).

This national park presents very rich biological resources, it has been registered 36 archaeological sites as the very well known Gran Pajaten, considered as the most impressive monumental complex compared only to the Tikal National Park in Guatemala.

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