Sahara (The Great Desert)
The Sahara is the largest hot desert in the world.
The desert comprises much of North Africa, excluding the fertile region on the Mediterranean Sea coast, the Atlas Mountains of the Maghreb, and the Nile Valley in Egypt and Sudan. It stretches from the Red Sea in the east and the Mediterranean in the north to the Atlantic Ocean in the west, where the landscape gradually changes from desert to coastal plains. To the south, it is bounded by a belt of semi-arid tropical savanna around the Niger River valley and the Sudan Region of Sub-Saharan Africa.