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18-05-2024
CAIRO: Scientists believe they may have solved the mystery of how 31 pyramids, including the world-famous Giza complex, were built in Egypt more than 4,000 years ago.
A research team from the University of North Carolina Wilmington has discovered that the pyramids are likely to have been built along a long-lost, ancient branch of the River Nile which is now hidden under desert and farmland.
For many years, archaeologists have thought that ancient Egyptians must have used a nearby waterway to transport materials such as the stone blocks needed to build the pyramids on the river but up until now, “nobody was certain of the location, the shape, the size or proximity of this mega waterway to the actual pyramids site”, according to one of the study’s authors, Prof Eman Ghoneim.
In a cross-continental effort, the group of researchers used radar satellite imagery, historical maps, geophysical surveys, and sediment coring (a technique used by archaeologists to recover evidence from samples) to map the river branch which they believe was buried by a major drought and sandstorms thousands of years ago.
The team were able to “penetrate the sand surface and produce images of hidden features” by using the radar technology, the study, published in the journal Communications Earth and Environment, said.
Among those features were “buried rivers and ancient structures” running at the foothills of where the “vast majority of the Ancient Egyptian pyramids lie,” Prof Ghoneim said.
Speaking to media, one of the study’s co-authors, Dr Suzanne Onstine, said “locating the actual [river] branch and having the data that shows there was a waterway that could be used for the transportation of heavier blocks, equipment, people, everything, really helps us explain pyramid construction”.
The team found that the river branch named the Ahramat branch, with “ahramat” meaning pyramids in Arabic was roughly 64km (39 miles) long and between 200-700m (656-2,296 ft) wide and it bordered 31 pyramids, which were built between 4,700 and 3,700 years ago.
The discovery of this extinct river branch helps explain the high pyramid density between Giza and Lisht (the site of Middle Kingdom burials), in what is now an inhospitable area of the Saharan desert.
The river branch’s proximity to the pyramid complexes suggests that it was “active and operational during the construction phase of these pyramids”, the paper said.
Dr Onstine explained that ancient Egyptians could “use the river’s energy to carry these heavy blocks, rather than human labor,” adding, “it’s just a lot less effort”.
The River Nile was the lifeline of Ancient Egypt and remains so to this day.
The largest pyramid field in Egypt is clustered along a narrow desert strip, yet no convincing explanation as to why these pyramids are concentrated in this specific locality has been given so far. Here we use radar satellite imagery, in conjunction with geophysical data and deep soil coring, to investigate the subsurface structure and sedimentology in the Nile Valley next to these pyramids. We identify segments of a major extinct Nile branch, which we name The Ahramat Branch, running at the foothills of the Western Desert Plateau, where the majority of the pyramids lie. Many of the pyramids, dating to the Old and Middle Kingdoms, have causeways that lead to the branch and terminate with Valley Temples which may have acted as river harbors along it in the past. We suggest that The Ahramat Branch played a role in the monuments’ construction and that it was simultaneously active and used as a transportation waterway for workmen and building materials to the pyramids’ sites. (Int’l News Desk)
