Land boundaries: total: 5,074 km
border countries: Algeria 463 km, Mali 2,237 km, Senegal 813 km, Western Sahara 1,561 km
Coastline: 754 km
Maritime claims: contiguous zone: 24 NM
continental shelf: 200 NM or to the edge of the continental margin
exclusive economic zone: 200 NM
territorial sea: 12 NM
Climate: desert; constantly hot, dry, dusty
Terrain: mostly barren, flat plains of the Sahara; some central hills
Elevation extremes: lowest point: Sebkha de Ndrhamcha -3 m