Discovery of long-lost river may solve ancient pyramid mystery


Scientists have discovered a long-buried branch of the Nile river that once flowed alongside more than 30 pyramids in Egypt, potentially solving the mystery of how ancient Egyptians transported the massive stone blocks to build the famous monuments.

The 40-mile-long river branch, which ran by the iconic Giza pyramid complex among other wonders, was hidden under desert and farmland for millennia, according to a study revealing the find on Thursday.

The existence of the river would explain why the 31 pyramids were built in a chain along a now inhospitable desert strip in the Nile Valley between 4,700 and 3,700 years ago.

The strip near the ancient Egyptian capital of Memphis includes the Great Pyramid of Giza — the only surviving structure of the seven wonders of the ancient world — as well as the Khafre, Cheops and Mykerinos pyramids.

Archaeologists had long thought that ancient Egyptians must have used a nearby waterway to move the giant materials used to build the pyramids.

“But nobody was certain of the location, the shape, the size or proximity of this mega waterway to the actual pyramids site,” lead study author Eman Ghoneim of the University of North Carolina Wilmington in the United States told AFP.

Guides with their camels look for tourists at the Giza Pyramids Necropolis on the outskirts of Giza on May 3, 2024. / Credit: JEWEL SAMAD/AFP via Getty Images

Guides with their camels look for tourists at the Giza Pyramids Necropolis on the outskirts of Giza on May 3, 2024. / Credit: JEWEL SAMAD/AFP via Getty Images

The international team of researchers used radar satellite imagery to map the river branch, which they called Ahramat — “pyramids” in Arabic.

Radar gave them the “unique ability to penetrate the sand surface and produce images of hidden features including buried rivers and ancient structures,” Ghoneim said.

Surveys in the field and cores of sediment from the site confirmed the presence of the river, according to the study in the journal Communications Earth & Environment.

The once mighty river was increasingly covered in sand, potentially starting during a major drought around 4,200 years ago, the scientists suggested.

“Easier to float down the river”

The Giza pyramids stood on a plateau roughly a kilometer from the banks of the river.

Many of the pyramids had a “ceremonial raised walkway” which ran alongside the river before ending at the Valley Temples which served as harbors, Ghoneim said.

This indicates that the river played “a key role in the transportation of the enormous building materials and workmen needed for the pyramid’s construction,” she added.

Exactly how ancient Egyptians managed to build such huge and long-standing structures has been one of history’s great mysteries.

These heavy materials, most of which were from the south, “would have been much easier to float down the river” than transport over land, study co-author Suzanne Onstine of the University of Memphis told AFP.

The banks of the rivers could have been where the funeral entourages of pharaohs were received before their bodies were moved to their “final burial place within the pyramid,” she suggested.

The river may also indicate why the pyramids were built in different spots.

“The water’s course and its volume changed over time, so fourth dynasty kings had to make different choices than 12th dynasty kings,” she said.

“The discovery reminded me about the intimate connection between geography, climate, environment and human behavior.”

The study comes on the heels of recent research projects focusing on the iconic pyramids.

Earlier this year, archaeologists launched a massive project to restore the smallest of Giza’s three famous pyramids to what they believe it looked like when it was built more than 4,000 years ago. An Egyptian-Japanese archaeological mission announced the project to put back in place hundreds of granite blocks that used to form the outer casing of the pyramid of King Menkaure.

Some archeologists, however, including a former head of Egypt’s antiquities ministry, aren’t on board with the project, and expressed concern as the digging got underway. Dr. Mohamed Abd El-Maqsoud, former Director of the Egyptian Antiquities Sector and a former senior official in Egypt’s antiquities ministry, told CBS News that before the granite blocks are moved, they should first be studied extensively to verify that they were all even part of the structure to begin with.

Last year, a team of archaeologists and other scientists in Egypt used cutting-edge technology that relies on rays of radiation from space to get a clear picture of a 30-foot-long corridor inside the Great Pyramid of Giza, which remains hidden behind a main entrance to the ancient structure.

Ahmed Shawkat contributed to this report.

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