Erg (landform) Erg (landform) An erg (also sand sea or dune sea, or sand sheet if it lacks dunes) is a broad, flat area of desert covered with wind-swept sand with little or no vegetative cover. The term takes its name from the Arabic word "ʿarq" (), meaning "dune field". Strictly speaking, an erg is defined as a desert area that contains more than of aeolian or wind-blown sand and where sand covers more than 20% of the surface. Smaller areas are known as "dune fields". The largest hot desert in the world, the Sahara, covers and contains several ergs, such as
Erg Ferradj eastern side. Erg Ferradj has a hot desert climate, with extremely hot summers and cool winters, and very little precipitation throughout the year. Agriculture is the main industry in Erg Ferradj. The commune has a total of of arable land found mainly to the east of the town, of which is irrigated. There are a total of 116,040 date palms planted in the commune. As of 2009 there were 9,575 sheep, 6,050 goats, 714 camels, and 23 cattle. There were also 6,400 chickens in 6 buildings. There is no significant tourist industry in Erg Ferradj. Basic services in the town