Major Landforms of Algeria

Algeria's Four Geologic Provinces

Africa's largest country (2.38M km²) divides into distinct north–south bands:

1. The Atlas Mountains (North)

• Tell Atlas: Coastal range; humid, forested (cork oak, Aleppo pine). Highest: Lalla Khedidja (2,308 m / 7,572 ft).
• Saharan Atlas: Inland, arid; juniper, steppe. Separates Mediterranean north from desert south.
• Formed by Africa-Eurasia collision; still seismically active (Chlef 1980, Boumerdès 2003).

2. The Tell Plateau (Coastal Strip)

• Narrow (50–100 km) fertile plain between Tell Atlas and Mediterranean.
• Most arable land; 80% of population, major cities (Algiers, Oran, Annaba).
• Mediterranean climate: wet mild winters, hot dry summers.

3. The High Plateaus (Hauts Plateaux)

• Semi-arid steppe between Tell Atlas and Saharan Atlas (1,000–1,300 m elevation).
• Basin-and-range: salt flats (chotts), seasonal lakes, grasslands.
• Pastoralism (sheep, goats), barley/wheat in wetter years. Cold winters, hot summers.

4. The Sahara Desert (South — ~85% of Land)

• Erg Oriental / Erg Occidental: Grand sand seas (dunes up to 300 m).
• Hamada: Rocky plateaus (Tanezrouft — "Land of Terror").
• Oases: Ghardaïa (M'zab Valley, UNESCO), Timimoun, Djanet, Tamanrasset.
• Hoggar (Ahaggar) Mountains: Volcanic massif, Mt. Tahat (2,908 m / 9,541 ft) — Algeria's true roof.
• Tassili n'Ajjer: Sandstone plateau, prehistoric rock art (UNESCO).

Algeria = Mediterranean fringe + mountain barrier + steppe corridor + Sahara heart.