The Sahara (Arabic: الصحراء الكبرى, aṣ-ṣaḥrāʾ al-kubrā , 'the Greatest Desert') is the largest hot desert and the third largest desert in the world after Antarctica and the Arctic. Its area of 9,200,000 square kilometres is comparable to the area of the United States. 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 the Sahel, a belt of semi-arid tropical savanna around the Niger River valley and the Sudan Region of Sub-Saharan Africa. The Sahara can be divided into several regions including: The western Sahara, the central Ahaggar Mountains, the Tibesti Mountains, the Aïr Mountains, the Ténéré desert, and the Libyan Desert. The name 'Sahara' is derived from ṣaḥārā (صحارى, pronounced /ˈsˤaħaːraː/), the plural of the Arabic word for "desert".
This post is part of the Our World Tuesday meme,
and also part of the Travel Tuesday meme,
and also part of the Wordless Wednesday meme.