Of all the ancient structures scattered across the globe, Egypt's Great Pyramid, built by the Pharaoh Khufu (also known as Cheops) around 2580-2560 BCE on the desert plateau of Giza, has attracted the most attention from ancient astronaut theorists and alternative historians. By some estimates, more has been written about the Great Pyramid than any other topic in ancient history, excepting only the Bible. The sheer number of odd theories about the pyramid has led archaeologists to label fringe investigators "pyramidiots." There is hardly any modern fringe theory about the Great Pyramid that is not derivative of one in place by 1877, the year James Bonwick wrote the overview of the 47 most popular theories about the pyramid that you are about to read. Thus, the following book is essential reading for understanding the history of pyramid theories and how ancient astronaut theorists and alternative archaeologists employ them.