It is a tributary of the upper Rio Demini near the headwaters of the Orinoco.
The river flows through the territory of Kopenawa near the border of Venezuela.
The so-called "Toototobi Yanomami índios" take their name from this river.
Davi Kopenawa Yanomami, a shaman and Portuguese-speaking spokesperson of that tribal group, was born close to it.
This article related to a river in the Brazilian state of Amazonas is a stub.