Mayo-Chinchipe
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The Mayo-Chinchipe or Mayo-Chinchipe-Marañon culture existed from c. 5500 – 1700 BCE in the highlands of what is now Ecuador and Peru, along the eastern slopes of the Amazonian Andes.[1][2]
It extended from the sources of Valladolid river, in the Podocarpus National Park in Ecuador, to where Chinchipe flows into the Marañon River in the area of Bagua, Peru, and received its name from the river names.[3]