Djelfa initially was built by the Roman empire, but the modern town was reclaimed as a French military post and laid out in a geometric plan. Between the dry, steppe-like high plateaus to the north, characterised by intermittent salt lakes, and the massive Sahara to the south, Djelfa is known for its Neolithic rock carvings dating back to 5000 BC.
Just a little north of the town lies an imposing feature known as Rocher de Sel or Salt rock resulting from the constant erosion by the rain. You will also discover on your visit, Megalitihgy funerary structures
Trade is an essential part for the semi-nomadic Ouled Nail confederation serving as an income selling their livestock, at the weekly markets