Grand Erg Occidental

The Grand Erg Occidental, (also known as the Western Sand Sea), Arabic العرق الغربي الكبير (al-ʿIrq al-Ḡarbī al-Kabīr), is an erg in the northern center of the Algerian Sahara. It is the third largest erg in Algeria after the Erg Chech and the Grand Erg Oriental.

Source: Wikipedia (CC BY-SA 4.0) — https://en.wikipedia.org/wiki/Grand_Erg_Occidental