This article examines the dynamic of political and social frontiers as it pertains the experiences of "brasiguaios" who live in some towns of the Alto Paraná, a province of Paraguay, These frontier villagers have been crossing the Brazilian political borders since the 1970's. They are creating various ways of circulation and border crossing flows in the "Triple Frontier" region between Paraguay, Brazil and Argentina. Relations between the "brasiguaios" and the Paraguayan population have produced new modes of ethnic and national identifications, social differences and cultural hibridities in the context of that complex frontier.
circulation; frontier; identification; nation