Grand Erg Oriental Grand Erg Oriental The Grand Erg Oriental (English: 'Great Eastern Sand Sea') is a large "erg" or "field of sand dunes" in the Sahara Desert. Situated for the most part in Saharan lowlands of northeast Algeria, the Grand Erg Oriental covers an area some 600 km wide by 200 km north to south. The erg's northeastern edge spills over into neighbouring Tunisia. The Grand Erg Oriental is a desert, a natural region receiving very little rainfall. It is the largest "Erg" in Algeria, the next in size being the much smaller Grand Erg Occidental ('Western Sand Sea'). The largest erg
Erg of Bilma Erg of Bilma The Erg of Bilma is a dune sea (Arabic: "erg") in the Ténéré desert region of the south central Sahara Desert. The Erg of Bilma stretches southwest from Fachi and the Tibesti Mountains. On the west it is bounded by the Aïr Mountains in north central Niger, and to the east it passes Bilma, continuing on to the Chadian border. It surrounds on three sides the oasis of Bilma, southernmost of a north–south string of oasies of the Kaouar rise. The Erg covers an area of approximately . At its southernmost edge, some of the dunes have