Source of the Amazon River the Mantaro. Explorers and scholars have identified each of the three rivers as being the source of the Amazon under one of the three definitions. The Mantaro is the most distant upstream point; the Maraňón is the main stem of the Amazon; and the Apurímac is the most distant source with an uninterrupted flow of water. The Amazon River is the largest river in the world in terms of its discharge into the Atlantic Ocean and either the longest or second longest river in the world, contending with the Nile River for that honor. More than from its mouth, upstream
Tara (river) the villages of Šćepan Polje (Montenegro) and Hum (Bosnia and Herzegovina) to form the Drina river (a branch of the Danube watershed). The Tara River cuts the Tara River Canyon, the longest canyon in Montenegro and Europe and second longest in the world after Grand Canyon, at 78 kilometers in length and 1,300 meters at its deepest. The canyon is protected as a UNESCO World Heritage Site, and is a part of Durmitor National Park. Rafting is very popular on Tara River. It is also one of the most popular things to do in Montenegro. The one-day rafting route, from