Washington, Nov 15 : A hidden room in Egypt''s Great Pyramid may help solve a centuries-old mystery of how the massive monument was built.
According to a report in National Geographic News, the little-known sealed space may support the theory that the 4,500-year-old monument to Pharaoh Khufu was constructed inside out, via a spiraling, inclined interior tunnel.
This idea contradicts the prevailing wisdom that the monuments were built using an external ramp.
The inside-out theory''s key proponent, French architect Jean-Pierre Houdin, said that for centuries, Egyptologists have ignored evidence staring them in the face.