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Multi-colored river
In Colombia, there is the river, whose length is about 100 km. It is located in the Sierra de la-Macarena. Name it "River of five colors" and is probably the most beautiful river in the world. Great time of year - the river is no different from the rest. But, nevertheless, every year a certain period on stream becomes a rainbow. Red, yellow, green and blue algae actually do river unusual.
