Casiquiare canal
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The Casiquiare river or canal is a natural distributary of the upper Orinoco flowing southward into the Rio Negro in Venezuela. As such, it forms a unique natural canal between the Orinoco and Amazon
The Casiquiare (bottom left) is separated from the Orinoco
Sunset on the Casiquiare River, in the State of Amazonas (Venezuela)
Rio Negro (Amazon)
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The Rio Negro, or Guainía as it is known in its upper part, is the largest left tributary of the Amazon River, the largest blackwater river in the world, and one of the world's ten largest rivers by a
Sunset over the Rio Negro, upstream from Manaus
The confluence of the Amazon River and the Rio Negro at Manaus, Brazil.
Rio Negro near Manaus
Victoria amazonica