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The Nubian Sandstone Aquifer System ( NSAS) is the world's largest known fossil water aquifer system. It is located underground in the Eastern end of the Sahara desert and spans the political boundaries of four countries in north-eastern Africa. [ 1] NSAS covers a land area spanning just over two million km 2, including north-western Sudan ...
The Sahara (/ s ə ˈ h ɑːr ə /, / s ə ˈ h ær ə /) is a desert spanning across North Africa. With an area of 9,200,000 square kilometres (3,600,000 sq mi), it is the largest hot desert in the world and the third-largest desert overall, smaller only than the deserts of Antarctica and the northern Arctic .
The history of Western Sahara can be traced back to the times of Carthaginian explorer Hanno the Navigator in the 5th century BC. Though few historical records are left from that period, Western Sahara's modern history has its roots linked to some nomadic groups (living under Berber tribal rule and in contact with the Roman Empire) such as the Sanhaja group, and the introduction of Islam and ...
A map of East Africa showing some of the historically active volcanoes (as red triangles) and the Afar Triangle (shaded at the center), which is a so-called triple junction (or triple point) where three plates are pulling away from one another: the Arabian Plate and two parts of the African Plate—the Nubian and Somali—splitting along the East African Rift Zone Main rift faults, plates ...
Richat Structure. / 21.114700°N 11.394300°W / 21.114700; -11.394300. The Richat Structure, or Guelb er Richât ( Arabic: قلب الريشات Qalb ar-Rīšāt ), is a prominent circular geological feature in the Adrar Plateau of the Sahara. It is located near Ouadane in the Adrar Region of Mauritania.
The Abbassia Pluvial was an extended wet and rainy period in the climate history of North Africa, lasting from c. 120,000 to 90,000 years ago. As such it spans the transitional period connecting the Lower and Middle Paleolithic . As with the subsequent Mousterian Pluvial (c. 50,000 to 30,000 years ago), the Abbassia Pluvial brought wet and ...
Trans-Saharan trade is trade between sub-Saharan Africa and North Africa that requires travel across the Sahara. Though this trade began in prehistoric times, the peak of trade extended from the 8th century until the early 17th century CE. The Sahara once had a different climate and environment. In Libya and Algeria, from at least 7000 BCE ...
European archaeology, as well as that of North Africa, is generally divided into the Stone Age (comprising the Lower Paleolithic, the Middle Paleolithic, the Upper Paleolithic, the Mesolithic, and the Neolithic ), the Bronze Age, and the Iron Age. For Africa south of the Sahara, African archaeology is classified in a slightly different way ...