Libya's Mountain Ranges: Acacus and Tibesti

Two Major Upland Systems

Libya is predominantly flat desert, but two significant mountain areas exist:

1. Acacus Mountains (Tadrart Acacus)

• Location: Southwest, near Algerian border (Fezzan).
• Highest: ~1,400 m.
• Features: Sandstone arches, rock art (UNESCO, 12,000 BCE–100 CE), eroded canyons.
• Climate: Hyper-arid; occasional gueltas (pools).

2. Tibesti Mountains (Northern Extent)

• Location: Far south, mainly in Chad; northern foothills enter Libya.
• Highest in Libya: ~2,200 m (Emi Koussi summit 3,415 m is in Chad).
• Geology: Volcanic (shield volcanoes, calderas).
• Features: Hot springs, unique flora/fauna, Toubou pastoralists.

Other Elevations

• Jebel Nafusa (NW) — 600–900 m escarpment.
• Al-Jabal al-Akhdar (NE) — 500–850 m, Mediterranean climate.

Mountains are islands of biodiversity and cultural heritage in the Sahara.