One of the most striking feature of these petroglyphs is the way they evolved with the change in climate.
Petroglyph depicting a possibly sleeping antelope, located at Tassili nAjjer in southern Algeria.
These figures ranged from a few centimeters to several meters tall.
The majority of Round Head paintings portray people with round featureless heads and formless bodies.
About 7,000 years ago, domesticated animals began to appear in the art.
This period is known as the Pastoral Period.
Rock art from this period reflects a changing attitude towards nature and property.
Wild animals gave way to cattle and stock.
Later drawings (3500 years ago) depicts horses and horse-drawn chariots.
Tassili N’Ajjer lies about 500 meters above the level of the desert.
Recent violence and insecurity in the country have further isolated Tassili N’Ajjer from the routes of most tourists.
Detail of a petroglyph depicting a bubalus anticus.
