In a brilliant piece of reverse engineering based on twenty years of research, engineer Christopher Dunn reveals that the Great Pyramid of Giza was the power source that fueled an advanced civilization in ancient Egypt. He shows how the pyramid's numerous chambers and passageways were positioned with deliberate precision to maximize its acoustical qualities, creating a harmonic resonance with the Earth and converting Earth's vibrational energies into microwave radiation. This may in fact be the same technology discovered by Nicola Tesla and a solution to our own clean energy needs.Â