One of Mother Nature’s amazing glories is the Cano Cristales River in Columbia. The 62 mile long river in the Serrania de la Macarena National Park is known as “the river of five colors” or the “liquid rainbow”.
The river bed has bright red, yellow, green, blue, and black colors for a few months when the conditions are right. The colors are produced during the reproductive process of the aquatic plants in the river a species of riverweed called Podostemaceae.
During the wet season the river runs fast and high, sun does not hit the river plants. During the dry there is not enough water. They are at their brightest during June and November.
This phenomenon happens nowhere else in the world. The area itself is a biodiversity hot spot where the Andes, the Amazon , and the Orinoco basins converge.