Tags: Language.
The Marañón River basin between Peru and Ecuador at a low point in the Andes which made it an attractive location for trade between the Inca Empire and the Amazon basin once harbored numerous languages which have been poorly attested or not attested at all. Those of the middle reaches of the river above the Amazon basin were replaced in historical times by Aguaruna a Jivaroan language from the Amazon which is still spoken there.
