Murals in different times have different themes and contents, different styles, some scribbled, some rigorous, some immature, some simple and colorful, recording the activities of blacks, French whites, Libyans, Tuareg people and other ethnic groups here.
The oldest pictures in rock paintings were drawn by prehistoric people who lived from 8000 BC to 6000 BC. The brushwork is immature, depicting some crimson figures. The figures are extremely asymmetrical, with big and round heads and thin legs and arms like reeds. They may be painted by black people who hunt and gather for a living, because there are tattoos and masked people in rock paintings, and this custom is exactly the same as that of black people.
In the cave, there is a picture of a 5.5-meter-high giant with two hands, a round head and shrugged shoulders. There seems to be four pieces of metal on his head. His face has no nose and his eyes are crooked, just like Picasso's works. Because thousands of other mural designs are not very freehand, only this giant image is particularly abstract, and Lott is puzzled, so he named it "Mars God".
Swiss dreamer von Daeniken thinks that Mars God is obviously an alien, wearing either a spacesuit or a diving suit and a spherical helmet with an antenna on his head. In fact, what looks like a helmet and an antenna is actually a headscarf decorated with feathers. Moreover, the figure painting on the uneven rock surface is not necessarily neatly drawn vertically, so Danny's speculation that it is a cosmic person is also far-fetched. Headless figures and grotesque objects abound in the rock paintings of this period, and there are similar pictures in the early Neolithic sites in Anatolia Plateau of West Asia, but most of them can't be explained.