Usually, the humans and animals are depicted within the context of a hunting scene. The Round Head Period is associated with specific stylistic choices depicting humanoid forms and is well separated from the Archaic tradition even though hunter-gatherers were the artists for both. The art consists mainly of paintings, with some of the oldest and largest exposed rock paintings in Africa; one human figure stands over five meters and another at three and a half meters. The unique depiction of floating figures with round, featureless heads and formless bodies appear to be floating on the rock surface, hence the "Round Head" label. The occurrence of these paintings and motifs are concentrated in specific locations on the plateau, implying that these sites were the center of ritual, rites, and ceremonies. Most animals shown are mouflon and antelope, usually in static positions that do not appear to be part of a hunting scene. The Bovidian/Pastoral period correlates with the arrival of domesticated cattle into the Sahara and the gradual shift to mobile pastoralism. There is a notable and visual difference between the Pastoral period and the earlier two periods, coinciding with the aridification of the Sahara. There is increased stylistic variation, implying the movement of different cultural groups within the area. Domesticated animals such as cattle, sheep, goats, and dogs are depicted, paralleling the zooarchaeological record of the area. The scenes reference diversified communities of herders, hunters with bows, as well as women and children, and imply a growing stratification of society based on property. The following Horse traditions correspond with the complete desertification of the Sahara and the requirement for new travel methods. The arrival of horses, horse-drawn chariots, and riders are depicted, often in mid-gallop, and is associated more with hunting than warfare. Inscriptions of Libyan-Berber script, used by ancestral Berber peoples, appear next to the images, however, the text is completely indecipherable. The last period is defined by the appearance of camels, which replaced donkeys and cattle as the main mode of transportation across the Sahara. The arrival of camels coincides with the development of long-distance trade routes used by caravans to transport salt, goods, and enslaved people across the Sahara. Men, both mounted and unmounted, with shields, spears, and swords are present. Animals including cows and goats are included, but wild animals were crudely rendered. Although these periods are successive the timeframes are flexible and are consistently being