On the northeastern edge of the Giza Plateau, I discovered three perfectly cut shafts hidden beneath the sands. They sit in the triangle between the Great Sphinx, Khufu's Pyramid and Khafre's Pyramid, ...

A Secret Tunnel Found in Mexico May Finally Solve the Mysteries of Teotihuacán The chance discovery beneath a nearly 2,000-year-old pyramid leads to the heart of a lost civilization ...