John Anthony West explores architectural anomalies and other evidence of an advanced civilization predating the ancient Egyptians. Across Egypt, the many architectural, engineering, artistic and scientific wonders still defy explaination. The mysterious Oserion appears to already have been an ancient ruin when it was "uncovered" by Seti I during the construction of the Temple of Abydos in first Dynasty. New developments in the "age-of-the-sphinx" debate. In the Cairo museum is a stella which describes reparations to the great sphinx performed by the Father of the traditionally credited builder. Does the great sphinx conseal its own date of construction in the age of Leo?

• John Anthony West