Jef-Jef el-Kebir

Jef-Jef el-Kebir is one of the high desert plateaus that extend between the Tibesti massif and the sandstone country of the Erdis. To the south lie the lakes of Ounianga, set in a basin where palms grow beside the water among dunes and eroded rock. North of the lakes the land rises toward Jef-Jef and neighbouring heights, in a Sahara of scant rainfall, fierce evaporation and great differences between daytime heat and night-time cold.