mostly barren, flat plains of the Sahara; some central hills
Elevation extremes:
lowest point: Sebkhet Te-n-Dghamcha -5 m
highest point: Kediet Ijill 915 m
Natural resources:
iron ore, gypsum, copper, phosphate, diamonds, gold, oil, fish
Land use:
arable land: 0.2%
permanent crops: 0.01%
other: 99.79% (2005)