[youtube=http://www.youtube.com/watch?v=3X7iYEgF8os&rel=0] These mighty falls are the dividing line between Argentina and Brazil.  The area around the falls was once controlled by Guarani indians whom the Jesuits ministered to beginning in 1609.  Watch movie The Mission to see events of jesuits in area.

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[youtube=http://www.youtube.com/watch?v=aIhGCV3Cb0o&rel=0]

Crossed border into Argentina after a look around the falls.

[youtube=http://www.youtube.com/watch?v=Qksh1cefYx8&rel=0]