The Napo River is a tributary to the Amazon River that rises in Ecuador on the flanks of the east Andean volcanoes of Antisana, Sincholagua and Cotopaxi.
The Napo River to the east of Coca
Village along west bank of Napo River in Peru, a few miles above confluence with Amazon. The land visible beyond the waterway is an island in the river.
The Amazon River in South America is the largest river by discharge volume of water in the world, and the longest or second-longest river system in the world, a title which is disputed with the Nile.
Satellite image of the Amazon Delta
Old drawing (from 1879) of Arapaima fishing at the Amazon river. The arapaima has been on Earth for at least 23 million years.
Amazon tributaries near Manaus
Amazonas state