There are Two Rivers in the Amazon... One is called the Rio Negro. One is called the Rio De Salomones. What is special about these two rivers is that they run side by side for 6 miles and never mix. At times, they swirl together fervently as if making a valiant effort to become one. These rivers never mix together because they flow at different speeds and maintain different temperatures. They have altogether different chemistry. The Rio Negro is dark and clear. It has lot