Rockart showing giraffes and other animals in what is now desert

The Acacus Mountains or Tadrart Acacus (Arabic: تدرارت أكاكوس‎ / ALA-LC: Tadrārt Akākūs) form a mountain range in the desert of the of the Ghat District in western Libya, part of the Sahara. They are situated east of the Libyan city of Ghat and stretch north from the Algerian border about 100 km. Tadrart is the feminine form of 'mountain' in the Berber languages (masculine: Adrar). The area has a particularly rich array of prehistoric rock art.

• http://en.wikipedia.org/wiki/Tadrart Acacus
• Hillman 1000 Wonders