Madre de Dios
Madre de Dios mäd´rā ᵺā dyōs [key], river, c.700 mi (1,130 km) long, rising in the Andes of SE Peru and flowing NE through NW Bolivia to the Beni River. It is a major artery of NW Bolivia, but frequent rapids make its lower course only partly navigable. It drains a rubber-producing region.
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