Inside Discovery of Big Void in Great Pyramid

Some 4,500 years ago, the Egyptian pharaoh Khufu ordered the construction of a Great Pyramid to serve as his own personal gateway to enter the afterlife. Composed of three chambers—the King's chamber, the Queen's chamber, and an underground chamber—the resulting edifice was every bit as grand as its purpose. But for centuries, rumors have swirled that the 455-foot structure harbors more hidden nooks and passageways.