Landform features of the Sahara desert: The most important factor in shaping the landform features of the Sahara desert is wind. The wind action, over the years, has shaped the landscape of the desert. The Sahara is not entirely a sandy desert. In fact, only 1/4th of the total area is covered by sand in the form of shifting sand dunes, also known as erg. There are also large areas covered by rocks and pebbles, also known as reg, and large portions made up of smooth bedrock, also known as Hamada. There are a few mountain ranges and plateaus towards the northern end of the Sahara, such as the Ahaggar and the Atlas mountains.
Sahara also has a few oases where water is available. Some famous ones are Kufra and Bilma.