Erg Chebbi Erg Chebbi Erg Chebbi () is one of Morocco's several ergs – large seas of dunes formed by wind-blown sand. There are several other ergs such as Erg Chigaga near M'hamid. Technically all these ergs are within an area of semi-arid Pre-Saharan Steppes and not part of the Sahara desert which lies some distance to the south. In places, the dunes of Erg Chebbi rise up to 150 meters from the surrounding hamada (rocky desert) and altogether it spans an area of 28 kilometers from north to south and up to 5–7 kilometers from east to west lining the Algerian
Erg Ferradj Erg Ferradj Erg Ferradj () is a town and commune in Abadla District, Béchar Province, in western Algeria. According to the 2008 census its population is 4,406, down from 4,670 in 1998, and an annual population growth rate of -0.6%, the second lowest in the province. The commune covers an area of . Erg Ferradj lies at an elevation of to the west of an extensive palm plantation covering 3000 hectares lying along the western side of the Oued Guir. The rocky hills of the hamada are found on both sides of the river, but are more dramatic on the