The Amazon Region begins on the East of the Andes. This region is characterized by its exuberant and unique rainforest ecosystems. High temperatures prevail, with abundant rainfall. The average temperature varies from 23şto 26 şC (72ş to 80ş F). The rivers formed in the mountains by the melting snow empty into the Amazon, Napo River is the longest in Ecuador and flows for 530 miles. The Amazon Region has been inhabited since a long time by Indian tribes, whose rights have been recognized by the Ecuadorian government. Settlement has extended gradually along its rivers, especially the Napo. This region homes the oilfields, which provide over 40% of the country’s exports.