Dust Arching Between Tibesti Mountains and Ennedi Plateau, Chad17.2N 22.8E
Dust blows in an arched shape, dipping to the south, between the Tibesti Mountains (upper left quadrant) and the Ennedi Plateau (lower right quadrant), in Chad. The former extend into southern Libya, while the latter is entirely in Chad. The Ennedi Plateau is a sandstone bulwark in the middle of the Sahara. It is assailed by sands on all sides, that encroach upon its deep valleys.