This article narrates the performance pedagogies created by the Rivers of Meeting project in the Afro-Indigenous fishing community of Cabelo Seco, Marabá, in the Brazilian Amazon. Performed on the thresholds between paradigms of "good living" and industrial development, three short stories show how young arts educators contribute to the project's independent Community University of the Rivers. The article is based on oral and written reflections by the young performers, and reveals the challenges and potentials that shape their community's future. Set on the edge of the River Tocantins--about to be deformed into a river highway for transporting iron from the largest mines and refineries in the world, powered by a vast hydroelectric dam--the interventions on this Amazonian threshold acquire a compelling resonance.