monde (1) temps (durée) (1) sédiment (1) art (1) datation (1) Dating (1) Art (1) Art (1) Antiquities, Prehistoric (1) Walls (1) Time (1) Sahara (1) Picture-writing (1) Painting (1) Painters (1) Prehistoric peoples (1) Foot (1) Carbon--Isotopes (1) Canning and preserving (1) Art (1) Optically stimulated luminescence dating (1) art (1) optoluminescence (1)