The Manú is a

river A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of w ...

in southeastern

Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = National seal , national_motto = "Firm and Happy f ...

. It runs down the eastern slopes of the

Andes The Andes, Andes Mountains or Andean Mountains (; ) are the longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range is long, wide (widest between 18°S – 20°S ...

Mountains into the Amazon Basin. It runs through what is now protected as the

Manú National Park Manú National Park ( es, Parque Nacional del Manú) is a national park and biosphere reserve located in the regions of Madre de Dios and Cusco in Peru. It protects a diverse number of ecosystems including lowland rainforests, cloud forests and ...

, a vast

Biosphere Reserve A nature reserve (also known as a wildlife refuge, wildlife sanctuary, biosphere reserve or bioreserve, natural or nature preserve, or nature conservation area) is a protected area of importance for flora, fauna, or features of geological or ...

, home to arguably the highest concentration of

biodiversity Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic (''genetic variability''), species (''species diversity''), and ecosystem (''ecosystem diversity'') l ...

on Earth. Few people live along its length. Much of the park is off-limits to all but permitted scientists and the indigenous groups of Amazonian Indians, mostly of the Machiguenga tribe. The Manú is a tributary to the

Madre de Dios River The Madre de Dios River () is a river shared by Bolivia and Peru which is homonymous to the Peruvian region it runs through. On Bolivian territory it receives the Beni River, close to the town of Riberalta, which later joins with the Mamore Rive ...

, which downriver joins the

Madeira River The Madeira River ( pt, Rio Madeira, link=no ) is a major waterway in South America. It is estimated to be in length, while the Madeira-Mamoré is estimated near or in length depending on the measuring party and their methods. The Madeira is ...

, and ultimately the Amazon River. In the late 19th and early 20th centuries, this area of what was organized as the

Madre de Dios region Madre de Dios (, en, Mother of God) is a department and region in southeastern Peru, bordering Brazil, Bolivia and the Peruvian departments of Puno, Cusco and Ucayali, in the Amazon Basin. Its capital is the city of Puerto Maldonado. It is als ...

was exploited for the production of rubber during the

rubber boom The Amazon rubber boom ( pt, Ciclo da borracha, ; es, Fiebre del caucho, , 1879 to 1912) was an important part of the economic and social history of Brazil and Amazonian regions of neighboring countries, being related to the extraction and comm ...

, with workers brought in by Brazilian, Bolivian and Peruvian interests.

References

Rivers of Peru Rivers of Madre de Dios Region {{Peru-river-stub