The diagram below shows all 4 shafts of the Great Pyramid (GP) targetting 4 different stars c.2,500BC as proposed by Virginia Trimble [Thuban & Kochab via the northern shafts) and Robert Bauval (Sirius and Alnitak via southern shafts). Constructed c. 2551–2528 BCE, it originally stood at 481.4 feet (147 meters), or about 45 stories. The Khufu pyramid, in cross-section, can be seen as being two equivalent back to back right triangles, each having a height to base ratio of 14 to 11. The Great Pyramid, or the Pyramid of Khufu, is the oldest and the tallest of the three pyramids towering over Giza. Above, within the main bulk of the pyramid, the second tunnel system leads up to a series of funerary vaults. The sequence of diagrams which follows will derive a pyramid having these proportions while also - in the same context - deriving a "squaring of the circle" in terms of the circle's circumference. The base of the great pyramid is approximately 240 m square. The internal structure of the Second Pyramid is much simpler and non-functional in comparison to the Great Pyramid. Assuming each Minecraft character is about 1metre tall (can be 1.5 m and this also reduces the size of the pyramid) and each block is about one metre long (compared to the size of each character), as a class build a solid square pyramid … Some of the casing stones that once covered the structure can still be seen around the base. There are traces of a 'Door' in the 'Bent' pyramid at Dashur. There was no provision for passing water through the Kings Chamber where the sarcophagus was, so as to remove heat. The 35 th row is at the same level as the top of the gabled roof of the 'Queens' chamber. The Great Pyramid was the tallest man-made structure in the world for over 3,800 years. One of the missing 'portcullis' stones is possibly sitting to the left of the original entrance. To outwit tomb robbers, this Ascending Passage was blocked with granite plugs, and its entrance in the Descending Passage was disguised with a limestone facing identical to the surrounding stones. Strabo mentions a 'Hidden Door' in the Great pyramid. Originally the Great Pyramid was covered by casing stones that formed a smooth outer surface, and what is seen today is the underlying core structure. New images from inside the Great Pyramid shaft reveal evidence of electrical terminals, cables and even ancient wiring diagrams!