NOVAفصل 24 افزودن تصویرشماره قسمت3Secrets Of Lost Empires (1): PyramidOverviewNOVA 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 (This Old House), join forces in the shadow of the Great Pyramid of Giza to put clever and sometimes bizarre pyramid construction theories to the test. Borrows from S19E15 This Old PyramidAir dateFebruary 4, 1997Runtime (min)60