Larger than Australia with its 8 million square kilometres, the Sahara has not always been the biggest hot desert on the planet. About 15,000 years ago, it was a green period brought about by a warming phase that had intensified evaporations from the top of the ocean and pushed the monsoons into the heart of the North African continent. The arid landscapes that we know today were then covered by large lakes and rich vegetation. Elephants were living there, as well as hippos, crocodiles and humans too. Those ones, as to immortalize this full of life period, have drawn paintings and engravings cut out of rock. These testimonies of the past are omnipresent in Tassili n’Ajjer. Indeed, this Sahara’s fragment is located in south-eastern Algeria and offers the vision of over 15,000 engravings to the brave who dare adventuring themselves into there. Over the sand dunes and rocky peaks, the traveller will discovers, in the same time as breathtaking landscapes, a touching testimony of the past.
Tassili n’Ajjer, located on the Algerian south-east part
Sahara composition is about 20 % of sandy surfaces and about 80 % of rocky surfaces, mostly sedimentary rocks. The hiker on the right allows us to imagine the landscape scale.
Tassili n’Ajjer overview
Here you can see one of the 15000 engravings that can be discovered into the Tassili n’Ajjer. The oldest ones are estimated to be about 12000 years old.
Another engraving, this time staging giraffes. The character on the left seems to be a hunter.
Night long exposure photography of “Moulnaga” peak, located in the heart of Tassili n’Ajjer. The 3 hours long exposure allowed the stars to trace these beautiful light full arabesques.
During the day, we can see another kind of arabesques: the ones drawn by the wind in the sand
Tifinagh (“ⵜⴼⵏⵗ” or “ⵜⵉⴼⵉⵏⴰⵗ” in Tifinagh) is a Berber alphabet existing for about 6000 years. It can be found in many writings, like here on this rock photographed during the night with the Milky Way as background.
Additionally to the gravures, we can see many paintings directly on rock. Humans characters are staging in what seems to be daily life representation: dances, sings, hunts, etc.
A lonely hiker in the desert
Milky Way photography with an Acacia forefront. The acacia’s roots can go into the ground on about 15 meters deep. Although it makes it very drought resistant, this tree remains quite rare in the Tassili n’Ajjer.
Tassili n’Ajjer’s vastness. Behind the dark rock’s barrier, the le Tassili n’Ajjer is extending to Libya, that can be saw in the background.
Engravings of animal footprints
The wind also let some souvenirs of its passing. It models dunes and draw in the sand thanks to dry blades of grass.
While some can spend many hours admiring the pared down lines of the desert…
… Others choose to ride at full speed through Tassili n’Ajjer windings
Those marines fossils remains that, once, water was here in abundance. Indeed, about 100 millions years ago, the sea was covering part of the Sahara.
Burning sun over a dried up Guelta. The bawling form of the ground retains the water during the very rare rainfalls (about 18mm / year). The very few water will evaporate, letting this thin cracked clay crust.
Old rock paintings realized in a very pared down style
More complex rock painting. Depending of the eras, different technics and styles succeeded one another.
Sand and Rock
Tassili n’Ajjer’s sunset
To sea more picture from Sahara:
ALl the pics from the Sahara desert
To learn more about the Sahara:
Sahara on Wikipedia (EN)
To learn more about the Tassili n’Ajjer:
Tassili n’Ajjer on Wikipedia (EN)
To learn more about the saharian Rock art:
Article sur Clio.fr de Yves Gauthier, Directeur de recherche au CNRS. (FR)