Conservation unit, on the low jungle, for the protection of the fauna and flora of the region. It is located at 180 Km. (115 miles) of Iquitos.It constitutes the biggest intangible area in Peru, located in the vertex of the rivers Marañón and Ucayali, landscapes of exceptional beauty, aguajales, and tahuampas.

This park lodges the biggest protected area of Peru, and also the biggest area of flooded tropical forests in Peru. Inside of this forest it exists great biodiversity. It has a surface of 2080 000 hectares and is the biggest in the country. The wild fauna is abundant and very rich. There are 132 types of mammals especially monkeys and gnawings, 330 types of birds, 150 types of reptiles and bathracians and 200 types of fishes.

Endangered species are protected inside this reserve, among them, paiche (Arapaima gigas) the biggest river-fish of the world; pink dolphin; manati (Trinchechus manatus) amazonic mammal; "huapo colorado" monkey (Cacaju calvus); "maquisapa" monkey (Ateles panicus) and the otter (Pteronoura brasiliensi).With regard to the fishes we con see: the paiche (Arapaima gigas) which is a quite big fish very appreciated by its meat; the charapa (Podocnemis expanii) the vaca marino (Trichechus inunguis) the bufeo colorado (Inia geoffrensis) and the bufeo negro (Satalia fluviatilis). We can also find several animals that are in danger of extinction such as: the maquisapa negro (Ateles Paniscus), the maquisapa pecho amarillo (Ateles beltzeguth) and the river wolf (Pteronura brasiliensis).

Close to the reserve, exists lodges for tourists. These lodgings organize visits and guide excursions.