1. Rio Negro
2. Rio Negro (Amazon)Rio Negro is the largest left tributary of the Amazon and the largest blackwater river in the world. It has its sources along the watershed between the Orinoco and the Amazon basins, and also connects with the Orinoco by way of the Casiquiare canal in southern Venezuela. In Colombia, where the Rio Negro's sources are located, it is called the Guainía River.
Read “Rio Negro (Amazon)” on English Wikipedia
Read “ネグロ川” on Japanese Wikipedia
Read “Rio Negro (Amazon)” on DBpedia
Read “Rio Negro (Amazon)” on English Wikipedia
Read “ネグロ川” on Japanese Wikipedia
Read “Rio Negro (Amazon)” on DBpedia
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