Here is a description of the relief of land in Manaus:
Floodplains (Várzeas): Manaus lies within the vast Amazon floodplain, which is periodically inundated during the rainy season (December to May). These floodplains are composed of fertile alluvial soils and are home to a variety of wetland ecosystems, including várzea forests and aquatic vegetation.
Uplands (Terra Firme): Beyond the floodplains, the relief rises to form the terra firme, which refers to the higher and relatively stable ground. These upland areas are characterized by rolling hills and plateaus, with elevations ranging from a few meters to several hundred meters above sea level. The terra firme is covered by dense rainforest, with a diverse range of plant and animal species.
River Terraces (Terenos de Solimões): Along the banks of the Amazon River and its tributaries, there are elevated terraces known as "Terenos de Solimões." These terraces were formed by the accumulation of sediments over time and are generally higher than the surrounding floodplains. They provide important sites for human settlements and agriculture.
Hills (Serras): In some areas around Manaus, particularly to the north and east, there are isolated hills or serras that rise above the general topography. These hills are remnants of ancient geological formations and can reach elevations of several hundred meters. The most notable hill in the Manaus region is the Pico da Neblina, which is located about 160 kilometers (100 miles) northwest of the city and is the highest point in Brazil, with an elevation of 2,994 meters (9,822 feet) above sea level.