The Algerian Desert (Arabic: الصحراء الجزائرية) is a located in north-central Africa and is part of the Saharan Africa. The desert occupies more than four-fifths of the algerian territory. Its expansion starts from the Saharan Atlas, more or less as a stony desert and the farther inland you get the more of a sand dune desert it becomes. In the southwestern parts is the mountain range Tassili n'Ajjer located. This area is a subject of great archaeological interest and was put up on the "World Heritage List" by UNESCO in 1982.[1] The highest official temperature was 50.6 °C (123.1 °F) at In Salah.[2]