Brazil, Amazonas, Manaus, 13 km east of city of Manaus along the Río Negro. At mouth of a natural canal called "Paraná do Xiborena" that cuts across a low island & connects the Rios Solimões & Negro. On Río Negro side of island, 1 km west of "Encontro das Águas" (point where the two rivers meet); on west side of mouth of canal, about 100 meters south of Rio Negro shore