http://wysinger.homestead.com/africanhistory.html

AFRICA: The African Nile River Valley region became a desert, except for the lower Nile area in Egypt. The Sphinx and Pyramids of Giza are outstanding examples of the Ice Age Civilization or the period from about 11,600 to 6,000 years ago, but none of its written records have been found there. The written records of the later lower Nile Egyptians only go back about 5,000 years. However, since hieroglyphics and Egyptian mathematics appeared highly developed about 5,000 years ago, it is likely that they came from an earlier civilization. There are two other written histories of African Nile people: the Old Testament, Jewish history of the past 5,800 years or so; and the Abyssinian Kbre Nege’st. A major problem is that the heartland of the African Nile River Valley region is desert, and many of its sites are probably buried under desert sand. We can, however, try to learn something from the legends of the area, such as the legends of Isis, Osiris and Horus, and of Thoth, who was called Hermes Trismegistus by the Greeks, who taught mathematics and music, who encoded the 78-leaf Book of Thoth as Tarot cards (which are represented by the design of the Temple of Luxor), and who said: “… the true knowledge of music is nothing other than this: to know the ordering of all separate things and how the Divine Reason has distributed them; for this ordering of all separate things into one, achieved by skilful reason, makes the sweetest and truest harmony with the Divine Song.”