The Sudd The Everglades The Pantanal Okanvango Delta
Great Slave/Erie Superior/Crater Great Slave/Crater Erie/Crater
Rio Jari Rio Branco Rio Xingu Rio Negro
Argentina Bolivia Paraguay Brazil
Norway United States Canada Iceland
Waterfalls Deep Caves Geothermal Activity Icebergs
Sodium Chloride Sodium Bitumen Sodium Carbonate
Volcano Desert Oasis Meteorite Impact Grazing Plain
22 sq km 22000 sq km 220 sq km 2200 sq km
Niagara Angel Iguaca Victoria