It is part of a major dune field that extends from Issaouane Erg in the north to the Sudanese Erg in the south, flanked by the Libyan erg of Murzuq.[2] In the north, the Issaouane Erg ends at the Tinrhert Plateau and in the south at the Fadnoun Plateau.[3] To a large extent it follows the 500-m contour of the surrounding landscape, ergs mostly being confined to basins.[4][5]