The Tuareg are a Northwestern African group of people speaking Tamasheq languages, who once controlled the Saharan caravan routes, mined the mountains and traded slaves and salt. It is believed that when the Greek historian Herodotus (5th century B.C.) described the Garamantes people, he was speaking of this ancient Libyan Saharan ethnic group. The Garamantes left rock drawings and seemed to have a religion much like the Egyptian model, including mummies and small pyramids. They mined for water under the limestone layers of rocks, producing rich agricultural terrain and requiring slave labor to maintain. Proud of their warrior abilities, the Tuareg are recorded as using four-horse chariots in their fighting activities.
Taken from: Google.com