none (landlocked)
Climate:
tropical in south, desert in north
Terrain:
broad, arid plains in center, desert in north, mountains in northwest, lowlands in south
Elevation extremes:
lowest point: Djourab 160 m
highest point: Emi Koussi 3,415 m
Natural resources:
petroleum, uranium, natron, kaolin, fish (Lake Chad), gold, limestone, sand and gravel, salt