Algeria is the largest country in Africa, the Arab world, and the Mediterranean Basin. Its southern part includes a significant portion of the Sahara. To the north, the Tell Atlas form with the Saharan Atlas, further south, two parallel sets of reliefs in approaching eastbound, and between which are inserted vast plains and highlands. Both Atlas tend to merge in eastern Algeria. The vast mountain ranges of Aures and Nememcha occupy the entire northeastern Algeria and are delineated by the Tunisian border. The highest point is Mount Tahat (3,003 m).
Algeria lies mostly between latitudes 19° and 37°N (a small area is north of 37°), and longitudes 9°W and 12°E. Most of the coastal area is hilly, sometimes even mountainous, and there are a few natural harbours. The area from the coast to the Tell Atlas is fertile. South of the Tell Atlas is a steppe landscape ending with the Saharan Atlas; farther south, there is the Sahara desert.
The Ahaggar Mountains (Arabic: جبال هقار), also known as the Hoggar, are a highland region in central Sahara, southern Algeria. They are located about 1,500 km (932 mi) south of the capital, Algiers, and just west of Tamanghasset. Algiers, Oran, Constantine, and Annaba are Algeria's main cities.
Climate and hydrology
In this region, midday desert temperatures can be hot year round. After sunset, however, the clear, dry air permits rapid loss of heat, and the nights are cool to chilly. Enormous daily ranges in temperature are recorded.
The highest official temperature was 50.6 °C (123.1 °F) at in Salah.
Rainfall is fairly plentiful along the coastal part of the Tell Atlas, ranging from 400 to 670 mm (15.7 to 26.4 in) annually, the amount of precipitation increasing from west to east. Precipitation is heaviest in the northern part of eastern Algeria, where it reaches as much as 1,000 mm (39.4 in) in some years.
Farther inland, the rainfall is less plentiful. Algeria also has ergs, or sand dunes, between mountains. Among these, in the summer time when winds are heavy and gusty, temperatures can get up to 110 °F (43.3 °C).
Fauna and flora
The varied vegetation of Algeria includes coastal, mountainous and grassy desert-like regions which all support a wide range of wildlife. Many of the creatures comprising the Algerian wildlife live in close proximity to civilization. The most commonly seen animals include the wild boars, jackals, and gazelles, although it is not uncommon to spot fennecs (foxes), and jerboas. Algeria also has a few, leopard and cheetah populations, but these are seldom seen.
A variety of bird species makes the country an attraction for bird watchers. The forests are inhabited by boars and jackals. Barbary macaques are the sole native monkey. Snakes, monitor lizards, and numerous other reptiles can be found living among an array of rodents throughout the semi arid regions of Algeria. Many animals are now extinct, among which the Barbary lions and bears.
In the north, some of the native flora includes Macchia scrub, olive trees, oaks, cedars and other conifers. The mountain regions contain large forests of evergreens (Aleppo pine, juniper, and evergreen oak) and some deciduous trees. Fig, eucalyptus, agave, and various palm trees grow in the warmer areas. The grape vine is indigenous to the coast. In the Sahara region, some oases have palm trees. Acacias with wild olives are the predominant flora in the remainder of the Sahara.
Camels are used extensively; the desert also abounds with poisonous and nonpoisonous snakes, scorpions, and numerous insects.