Lake Assal is located between Ethiopia and Djibouti. It has a surface of 54 km² and is to about 155 m below sea level. Thus it is the deepest place of the continent.
Its salt content amounts to 34.8% and thereby it is ten times higher than that of the oceans and about 5 - 10% higher than that of the Dead Sea. This extremely high salt content is the result of the high evaporation.
Lake Assal gets its water mainly from underground sources, which refer their water from the close up Gulf of Aden.