The landscape of the district is mostly mountainous. The Nera Plateau is located in the eastern part of the district, the Tas-Kystabyt Range in the central area, the Oymyakon Highlands and the Elgin Plateau in the west, the Suntar-Khayata Range at the southwestern end and some ranges of the Chersky mountain system in the north. The main river is the Indigirka and the entire territory of the district is part of the Indigirka River basin. There are many lakes in the district, with Labynkyr Lake in particular being famous for its mythical Labynkyr monster.