Lake Assal is a crater lake in the Danakil Desert in central Djibouti. Dormant volcanoes and black lava fields back its emerald water. More than 150 m below sea level, it’s the lowest point in Africa. The wet section of the lake is a body of extremely salty water fed by hot springs. The dry section features a white salt bed from which lake water evaporated over the years. Salt is extracted in slabs from this section.