The Old Kingdom, ruled from Memphis near modern Cairo, is the age of the pyramids. In about a century, Egyptian builders went from stacking stone for the first time on a large scale to raising the largest stone monument of the ancient world. How they did it, and who did the work, tells us as much about the Egyptian state as any written law.
From step to smooth
Early kings were buried under mudbrick platforms called mastabas. Around 2650 BC, the king Djoser of the Third Dynasty tried something new. Djoser's Step Pyramid at Saqqara, credited to his official Imhotep, was the first large building made entirely of cut stone. It began as a mastaba and grew into six stacked layers, surrounded by a walled complex of courts and shrines. Later Egyptians remembered Imhotep as a sage and, much later, worshipped him as a god of healing.
The next great builder, Sneferu, founder of the Fourth Dynasty, built at least three pyramids and learned by trial and error. At Dahshur his Bent Pyramid changes angle partway up, most likely because the builders feared the steep original slope was unstable. His Red Pyramid nearby was the first successful true pyramid with smooth sides. These experiments show engineers adjusting as they went, not following a secret formula.
The Great Pyramid
Sneferu's son Khufu built at Giza around 2560 BC. The Great Pyramid rose about 146 meters and remained the tallest human-made structure for some 3,800 years, until the spire of Lincoln Cathedral in England surpassed it in the fourteenth century. It contains around 2.3 million blocks, and its base is level to within a few centimeters. Khufu's successors Khafre and Menkaure added smaller pyramids, and the Great Sphinx is usually attributed to Khafre. Scholars still argue over how the stones were raised, with straight ramps, ramps wrapping around the pyramid, and levers all proposed; probably several methods were combined.
Who built the pyramids?
Herodotus, writing some two thousand years later, said one hundred thousand men worked in three-month shifts for twenty years. Popular culture added armies of whipped slaves. Excavation since the 1990s has changed that picture. South of the Sphinx, teams led by Mark Lehner found a workers' town with bakeries, breweries and barracks, and Zahi Hawass excavated cemeteries of workers nearby. The workers' town and tombs at Giza suggest an organized, fed labor force rather than slaves: skeletons show healed fractures and even amputations that people survived, which implies medical care. Crews had team names such as Friends of Khufu, and some workers were buried with tools and offerings near the king's monument.
That does not make the work voluntary in a modern sense. Most laborers were probably farmers called up in rotation under the corvée, working beside a smaller core of skilled masons. Many modern estimates put the workforce at a few tens of thousands at most, far below Herodotus' figure. The honest answer is neither slavery nor happy volunteering, but compulsory service in a society where the state's demands and its rations went together.
A logbook from the reign of Khufu
In 2013 a French and Egyptian team led by Pierre Tallet found the oldest known inscribed papyri at Wadi al-Jarf, an ancient harbor on the Red Sea coast. Among them is the logbook of an inspector named Merer. The Diary of Merer records his crew shipping limestone from the Tura quarries to Giza for Khufu's pyramid. It notes days of loading, sailing along canals during the flood, and unloading near the building site. For the first time we can read, in the words of a man who was there, part of the routine behind the monument.
The end of the Old Kingdom
Later Old Kingdom pyramids were smaller and more cheaply built. Kings of the Fifth Dynasty poured resources into sun temples, and provincial governors grew richer and passed their offices to their sons. The Sixth Dynasty king Pepi II is traditionally said to have reigned over ninety years, a figure many scholars doubt. After about 2181 BC, central power broke down as weaker kings faced strong provincial governors and, many scholars think, a run of low Nile floods. Egypt entered the First Intermediate Period, with rival centers of power at Herakleopolis in the north and Thebes in the south. Some inscriptions from this time boast of local governors feeding their people through famine, a sign that loyalty was shifting to whoever could keep the granaries full.
Worked example: the numbers behind a pyramid
Suppose the Great Pyramid's 2.3 million blocks were set over about twenty years, working ten hours a day. Twenty years of days is about 7,300, or 73,000 working hours. Dividing 2.3 million by 73,000 gives roughly thirty blocks an hour, about one every two minutes, every day, for two decades. Each average block weighed over two tons. That simple calculation explains why organization mattered more than any single clever machine. Quarrying, hauling, feeding workers, making tools and keeping records all had to run in step. The pyramid is as much a monument to administration as to engineering, and to the people whose labor the state could command.