A private operator offers a more daring alternative. Leaving in a 4x4 vehicle we drive 8 km. through the jungle to the coast of the inferior Iguazu river.
Some semi-rigid rafts with powerful engines will be waiting for us to go upstream and into the mist veil formed by the cascades.
Another option is to take a rowing boat in the upper Iguazú river to watch the animals and plants in this delta, and maybe see some water tortoises or yacares sunbathing on the coast.
Iguazú is a singular environment that inspired the writer Horacio Quiroga in his "Tales of the Jungle".