Explanation:

Lake Faguibine is an isolated lake in Mali, west of Timbuktu (Tombouctou). It lies north of the Niger River in the Macina depression. Lake Faguibine in northern Mali is dry and has been since the 1970s. Over seven years, droughts in the 1970s dried up the lakes. Then sand filled the channels connecting the lakes to the River Niger, with the result that when rain finally returned the water could no longer reach the lakes.