From National Geographic: Great Pyramid Mystery to Be Solved by Hidden Room?
A sealed space in Egypt’s Great Pyramid may help solve a centuries-old mystery: How did the ancient Egyptians move two million 2.5-ton blocks to build the ancient wonder?
The little-known cavity may support the theory that the 4,500-year-old monument to Pharaoh Khufu was constructed inside out, via a spiraling, inclined interior tunnel—an idea that 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, says for centuries Egyptologists have ignored evidence staring them in the face. [continue].