River of five colors, as the locals call it. It
originates in the south of the mountain chain Macarena, Colombia, and
flows eastward to its confluence with the Guayabero river. In the Cano
Cristales you can find five colors: yellow, blue, green, black and red.
All of them are waste product of many algae and, depending on time of
year, color saturation, or weakened or strengthened.
Added to the list...