Sahara is a large desert area now, with dubious dunes and it is called as ergs and meadow covered by uneven rocks and it is called Hamada, emphasized by mountains that can be 11,000 feet (3,400 m) high, all in 8.8 million square kilometers (3.3 million square miles) it is more than Australia with less than 100mm or rain per year and at best distances one from another with humble bursts of life, the spring. In Arabic, Sahara really means desert.
In this article we will be discussing about Sahara Desert and its brief history. 20 years ago, analyzer using radar science discovered in the extent of the rocks of the deep valleys, a web of channels, few small, others deeper, as extensive as the Nile, which express the dry riverbeds of the rivers that crossed Sahara thousands of years ago. Niger River once started in Sahara.
The desert of Sahara is assumed to be at least 2.5 million years old. Studies made on the variation of humidity in Sahara during the last 40,000 years concede that the borders of the desert changed sometimes southward and other times northward and in exact periods, the desert vanished completely, the sand ridge being interchanged by wooded savannas, like those erect today in eastern Africa. 18, 000 years ago, the last Ice Age had come its point and Sahara had moved 250 mi (400 km) south from its extant location. But the ice sheltering Northern Asia, Europe and North America liquefied between 13,000 to 8,000 years ago.
Thousands years ago, the heavy rain was abundant and in Sahara prospered the Neolithic civilization which left the popular rock arts situated in Tassili n’Ajjer Mountains and other places of Sahara, design crocodiles, rhinos, giraffes, ostriches, hippopotamus and elephants, encountered today only in Africa at South of Sahara, but also Oryx skin and gazelles. The Sahara was full with lakes in the region of current Niger and people hunted skin, while its mountains were concealed by forests. Prehistories encountered from elephant and hippopotamus bones to fishing weapon.
After that, thousands years ago, the region inclined into the dry desert we know now. In few Saharan mountains or plot, there are few savanna aspects still remaining, such as hyraxes, crocodiles and various plants species. But human actions like deforestation, radical grazing and farming sped up the reality. And Sahara is still multiplying southward since 1900, the desert has collected a limit over 250 km wide.
To tell you, the symbol of Sahara today is the dromedary camel. This species kind entered Sahara around the times of Jesus Christ, brought from Arabia, prior that, people of the area used the donkey, started from the African wild ass, a genuine of the place.
Thanks for reading, till next time!