The rock art of the Djelfa region in the Ouled Naïl Range (Algeria) consists of prehistoric cave paintings and petroglyphs dating from the Neolithic age which have been recognized since 1914. Following the Saharan Atlas Mountains they follow on from those, to the west, of south Oran (the regions of Figuig, Ain Sefra, El Bayadh, Afalou and Tiaret), to which they are related. Comparable engravings have also been described further to the east, in the Constantine (Algeria) region.