Wetland System of the Paraguay - Paraná, located at the South American Central Valley / Sub-Andean depression, embraces the Pantanal, including the wetlands of the Middle and Low Paraguay River, the alluvial valley of the Middle and Low Paraná until the Prata River. It is formed along approximately 3,400 km extension of rivers free of dams, being the worlds largest fresh water wetland corridor, including territories from Brazil, Bolivia, Paraguay, Argentina and Uruguay.

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