Archaeologists found the ancient remains at a workers' town near the pyramids. The town is located about 400 metres south of the Sphinx, and was used to house workers building the pyramid of pharaoh Menkaure, the third and last pyramid on the Giza plateau.
The site is also known by its Arabic name, Heit el-Ghurab, and is sometimes called "the Lost City of the Pyramid Builders."
So far, researchers have discovered a nearby cemetery with bodies of pyramid builders; a corral with possible slaughter areas on the southern edge of workers' town; and piles of animal bones, LiveScience reported.
"People were taken care of, and they were well fed when they were down there working, so there would have been an attractiveness to that," said Richard Redding, chief research officer at Ancient Egypt Research Associates (AERA), a group that has been excavating and studying the workers' town site for about 25 years.
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At the workers' town, which was likely occupied for 35 years, researchers have discovered a plethora of animal bones.
"Needless to say, pyramid building is hard work. The workers would need at least 45g to 50g of protein a day," Redding said.
Half of this protein would likely come from fish, beans, lentils and other non-meat sources, while the other half would come from sheep, goat and cattle, he estimated.
Combining these requirements and other protein sources with the ratio of the bones (and the amount of meat and protein one can get from an animal), Redding determined about 11 cattle and 37 sheep or goats were consumed each day.
In order to maintain this level of slaughter, the ancient Egyptians would have needed a herd of 21,900 cattle and 54,750 sheep and goats just to keep up regular delivery to the Giza workers, Redding estimates.