The Enterprise Mission - Great Pyramid Tunneling - Is a secret tunnel being excavated in the Great Pyramid? Part of Richard Hoagland's large site that also investigates Cydonia and the Miami Circle The Great Pyramid - Tries to explain the scientific, philosophical, and divine revelations of the Great Pyramid, as a biblical, chronological device. Great Pyramid of Giza Research Association - A popular approach to the topic, with amateur articles submitted by users and a picture tour. Embraces both mainstream news stories and amateur theories. Was the Great Pyramid Built in the Center of all Land-Areas? - Holger Isenberg presents a simple trigonometric algorithm on this 19th-century idea. Pharaoh's Pump Foundation - Suggests that the Great Pyramid at Giza was built around a colossal water pump. World Mysteries: The Great Pyramid - Article proposing a construction date thousands of years before the accepted 3rd dynasty. The Secret Power Of The Pyramids - Describes the 'secret power' inside the pyramid. Make your own pyramid to test it. Giza Pyramids - The Vanishing Point - Article written by Stephen Goodfellow. Includes calculations, dimensions, coordinates, letters, and images. Are Pyramids Made Out of Concrete? - Research by Joseph Davidovits suggests that pyramids and temples were constructed using agglomerated limestone, rather than quarries, and hoisted blocks of natural limestone. Rosetjau.com - Giza Throne Theory - Presents two studies by Bill McNulty and an open letter to Dr. Mark Lehner. [PDF files] The Horizon of Khufu - Article explaining that the Giza pyramids are geometric religious art. The Orion Mystery - Explores the ideas in the book by Robert Bauval, which argues that Giza pyramids were a faithful mimicry of the stars forming the 'belt' in the constellation of Orion. Giza: The (Half) Truth - Debates between authors John Anthony West, Robert Schoch and Robert Bauval (for the "Lost Civilisation" theory), and Chris Ogilvie-Herald and Ian Lawton, the authors of "Giza: The Truth". When was the Giza Complex Constructed? - Lengthy article on this topic considering a wide range of evidence. The Great Pyramid and the Earth - Pyramidology blog.