The Rio Nhamundá is a significant river approximately 300 kilometers long, forming part of the border between the states of Amazonas and Pará in northern Brazil. It originates in the Serra do Jatapu plateau near the tri-border region of Roraima, Amazonas, and Pará. The river's middle section is home to the Hixkaryana Indigenous people, whose communities are located along its shores. For paddlers, the river's character is defined by its remote, tropical setting within the Amazon basin, offering an immersive wilderness experience. The waterway is accessible for exploration via kayak and stand-up paddleboard. The region's cultural significance is notable, as the river flows through the Nhamundá-Mapuera Indigenous Territory. Paddlers should be prepared for a journey in a sparsely populated area with limited facilities, where encounters with local Indigenous communities are part of the environment. The experience is best suited for self-sufficient adventurers seeking a trip through a culturally and ecologically distinct part of the Amazon.