The Amazon lowlands are widest together the eastern base on the Andes. They narrow towards the east until finally, downstream of Manaus, only a slender ribbon of each year flooded plains ( Jugoistočni dio više je neravan, sa složenim masama grebena i planinskih lanaca s vrhuncima do 1200 m. Lanci https://ykpatriciaqt.ourcodeblog.com