Trou au Natron is a volcano in the nation of Chad in Northern Africa. It is located just south east of Toussidé, the westernmost volcano of the Tibesti Mountains.
The Tibesti Mountains are a volcanic group of inactive volcanoes with one potentially active volcano in the central Sahara desert in the Bourkou-Ennedi-Tibesti Region of northern Chad. The northern slopes extend a short distance into southern Libya.
The Niger River is a relatively "clear" river, carrying only a tenth as much sediment as the Nile because the Niger's headlands are located in ancient rocks that provide little silt. Like the Nile, the Niger floods yearly; this begins in September, peaks in November, and finishes by May.
The Sahara in North Africa, is the one of the largest deserts in the world. Antarctica is also a desert, and is larger.
It is bounded by the Atlantic Ocean, the Atlas Mountains, the Mediterranean Sea, the Red Sea, and the Sahel region. Inside it are parts of many countries, including Morocco, Algeria, Tunisia, Libya, Egypt, Mauritania, Mali, Niger, Chad, and The Sudan. Most parts are uninhabited, but some people manage to survive in places where there is water.