Of the seven wonders of the ancient world, only the Great Pyramid of Giza remains. An estimated 2 million stone blocks weighing an average of 2.5 tons went into its construction. When completed, the 481-foot-tall pyramid was the world’s tallest structure, a record it held for more than 3,800 years, when England’s Lincoln Cathedral surpassed it by a mere 44 feet.
We know who built the Great Pyramid: the pharaoh Khufu, who ruled Egypt about 2547-2524 B.C. And we know who supervised its construction: Khufu’s brother, Hemienu. The pharaoh’s right-hand man, Hemienu was "overseer of all construction projects of the king" and his tomb is one of the largest in a cemetery adjacent to the pyramid.
What we don’t know is exactly how it was built, a question that has been debated for millennia. The earliest recorded theory was put forward by the Greek historian Herodotus, who visited Egypt around 450 B.C., when the pyramid was already 2,000 years old. He mentions "machines" used to raise the blocks and this is usually taken to mean cranes. Three hundred years later, Diodorus of Sicily wrote, "The construction was effected by mounds" (ramps). Today we have the "space alien" theory–those primitive Egyptians never could have built such a fabulous structure by themselves; extraterrestrials must have helped them.
Modern scholars have favored these two original theories, but deep in their hearts, they know that neither one is correct. A radical new one, however, may provide the solution. If correct, it would demonstrate a level of planning by Egyptian architects and engineers far greater than anything ever imagined before.
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