Sefar is located in the heart of the Tassili N'Ajjer mountain range, 2,400 km south of Algiers and close to the Libyan border. The city of Sefar, also called " City of Caves ", is one of the largest troglodyte cities in the world, with several thousand petrified structures. It has been on the World Heritage List since 1982. It was discovered in 1965 by the tour guide Djebrine Ag Mohammed Ag Machar, (1890 - 1981).
Nevertheless, very few travellers visit it owing to its geographical remoteness and especially the difficulty of accessing the site. The absence of a road makes it inaccessible and the only way to get there is to cross the road from the Tassili N'Ajjer plateau and take a very steep path on foot or on a donkey.
Once you have crossed this maze of rocks with narrow and impassable paths, this extraordinary natural city reveals itself to you! Known as the world's largest open-air museum of prehistoric art, this site is home to tens of thousands of drawings, engravings and rock paintings discovered in the 1950s.
The paintings, some of which date back more than 12,000 years, mostly depict animals and scenes of hunting or day-to-day life, thus revealing that the Sahara Desert was not always as it is today. Among the most famous drawings are "The Great God", "The Black Archer", "The Martian" and "The Round Heads"
The Rock City or Sifar City possesses an amazing archeological and breathtaking landscapes dating back to some 10000 years. It is seen the greatest open-air museum in the world. It also considered as the largest troglodyte city in the world (listed as World Heritage since 1982) which house hundreds of thousands of carvings, drawings and cave paintings .It contains more than five thousand cavernous houses and more than 15 thousand murals and engravings (a pictorial of man and bestiary) dating back more than 20 thousand years. Among the famous figures of this great geological site;"Great Gods" and "Martians" are among the oldest and most enigmatic paintings in the world. In this prehistoric rock art, the human heads are systematically round, simple, decorated with geometric patterns, painted in red ocher and enhanced with white, blue-gray and yellow.