On March 30, French architect Jean-Pierre. Houdin announced at a news conference in Paris that he had solved the mystery of the construction of Egypt's Khufu Pyramid. The results of the study conducted by Houdin showed that the passageways for transporting materials during the construction of the pyramid were built inside the pyramid. Two previous theories about the construction sequence of Khufu's pyramid have suggested that the earth slope for transporting the stone was built outside the pyramid. The picture shows a computer simulation made by Houdin using three-dimensional technology to explain his new theory of the construction of Khufu's pyramid.