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Which river is known as the 'River of Five Colors'?
- Amazon
- Caño Cristales
- Yangtze
- Ganga
Answer: Caño Cristales
Caño Cristales in Colombia is known as the 'River of Five Colors' or 'Liquid Rainbow' due to vibrant aquatic plants (Macarenia clavigera) that turn red, combined with yellow sand, green algae, blue water, and black rocks. It is a unique natural wonder.