Between 1984 and 1989 the American explorer Gregory Deyermenjian made five expeditions to Mameria—for three of which he was accompanied by Peruvian explorer Paulino Mamani H.--conducting anthropological as well as archaeological research concerning the area's Machiguenga inhabitants and ancient archaeological remains.
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In 1983 an architect/adventurer from Cusco, César Vilchez, his nephew César Medina, Carlos Cartagena, and Manuel Guevarra found their way to Mameria in a grueling two month journey during which they nearly perished from hunger.