sentences:  Vestiges of an inscription in Tifinagh, the Tuareg's traditional Libyco-Berber writing script, have been found on one of the ancient sepulchre's walls.External accounts of interaction with the Tuareg are available from at least the 10th century.Ibn Hawkal (10th century), El-Bekri (11th century), Edrisi (12th century), Ibn Batutah (14th century), and Leo Africanus (16th century), all documented the Tuareg in some form, usually as Mulatthamin or "the veiled ones."