No main cast listed for this episode.
NOVA — S37E11
Episode: Riddles of the Sphinx
Air Date: 2010-01-19
Runtime: 55 min
Overview
A team of archeologists carries out experiments that reveal the techniques and labor invested in the carving of the Sphinx. The team also unearths new discoveries about the people who built the gigantic sculpture and why they created such a haunting and stupendous image.