 Following the 2011 eruption of Nabro, the lake is contaminated with sulfuric acid, making the salt inedible.The highly saline Lake Afrera fills a topographic depression in the northern AfarRift at the offset between the southern tip of the Erta Ale volcanic ridge and thenorthern tips of the Alaita and Tat Ali ridges.Bathymetric profiles revealed≈80 mdeep canyon (minus≈190 m below sea level) parallel to NNW normal faultsexposed at the NE shore of the lake.