Some of the engravings of the Djelfa region seem to have been known since the 1850s (El Idrissia). Among the best-known, those of Zaccar were discovered in 1907, and Flamand described in 1914 the station of Daïet es Stel. In the mid-1960s the active Djelfa Council of Initiatives undertook to record engravings and paintings, and Father F. de Villaret, who accompanied the visitors, thus made known works from some twenty new stations, notably those of Oued el Hesbaïa and Aïn Naga.