Les Tizouyags

The Hoggar Mountains (Arabic: جبال هقار‎, Berber: idurar n Ahaggar), also known as the Ahaggar, are a highland region in central Sahara, or southern Algeria, along the Tropic of Cancer. They are located about 1,500 km (900 mi) south of the capital, Algiers and just west of Tamanghasset. The region is largely rocky desert with an average altitude of more than 900 metres (2,953 feet) above sea level. The highest peak is at 3,003 meters (Mount Tahat). Assekrem is a famous and often visited point where le Père de Foucauld lived in the summer of 1905. The main city nearby the Ahaggar is Tamanghasset, built in a desert valley or wadi.

Algeria ⁱ/ælˈdʒɪəriə/ (Arabic: اَلْجَزَائِر‎, al-Jazā'ir; Berber: ⴷⵣⴰⵢⴻⵔ Dzayer; Algerian Arabic: الجَزَايَرْ El Jazayer and الدزاير Dzayer), officially the People's Democratic Republic of Algeria (اَلْجُمْهُورِيَّة اَلٌجَزَائِرِيَّة اَلدِّيمُقْرَاطِيَّة اَلشَّعْبِيَّة, al-Jumhūriyya al-Jazāʾiriyya ad-Dīmuqrāṭiyya ash-Shaʿbiyya), also formally referred to as the Democratic and Popular Republic of Algeria, is a large country in the Maghreb region of Northwest Africa with Algiers as its capital.

A desert is a landscape or region that receives an extremely low amount of precipitation, less than enough to support growth of most plants. Most deserts have an average annual precipitation of less than 400 millimetres (16 in). A common definition distinguishes between true deserts, which receive less than 250 millimetres (10 in) of average annual precipitation, and semideserts or steppes, which receive between 250 millimetres (10 in) and 400 to 500 millimetres (16 to 20 in).

Deserts can also be described as areas where more water is lost by evapotranspiration than falls as precipitation. In the Köppen climate classification system, deserts are classed as BWh (hot desert) or BWk (temperate desert). In the Thornthwaite climate classification system, deserts would be classified as arid megathermal climates.