NOVA — Episode 12: Titanic's Lost Sister

You are watching the episode Titanic's Lost Sister In a 90-minuite presentation, NOVA reveals the ancient secrets of how the pyramids were built by actually building one. A noted Egyptologist, Mark Lehner, and a professional stonemason, Roger Hopkins, join forces in the shadow of the Great Pyramid of Giza to put clever and sometimes bizarre pyramid construction theories to the test.