This is the Documentary that shook up Egyptian Archaeology when it was broadcast on NBC television. "The Mystery of the Sphinx," introduced American viewers to the discovery by John Anthony West and Robert Schoch that the Great Sphinx of Giza might be thousands of years older than its assumed date of 2500 BC. Narrated by Charlton Heston, the documentary provides evidence that the ancient Egyptians possessed scientific knowledge unknown to us and carried on the wisdom tradition of an earlier lost civilization.