The Great Pyramid of Giza could date back thousands of years before the reign of Pharaoh Khufu, according to a limestone erosion study published in January 2026 on ResearchGate. Researcher Alberto Donini analyzed twelve points at the base of the monument using a newly proposed Relative Erosion Method (REM), though independent archaeologists note the technique lacks peer review and contradicts established chronological evidence.
How the Relative Erosion Method Works
The study examines twelve specific points on the base of the Great Pyramid of Giza. Alberto Donini developed the Relative Erosion Method to compare limestone surfaces. Some blocks remained protected beneath the sand until medieval times, while others stayed exposed to the elements ever since construction. Portions of the exterior casing disappeared gradually over centuries, with the earthquake of 1303 significantly accelerating the breakdown of the stone.
Donini estimated a 68.2% probability that the pyramid falls within a main statistical interval between 8,954 B.C. and 36,878 B.C.
By measuring differences between protected and exposed surfaces, the REM model generated wide exposure periods ranging from several thousand years to many more. The calculated average places construction around a much earlier era. Based on these calculations, the author suggests Khufu may have restored an ancient structure rather than building the monument from scratch. Donini cautions that the REM approach provides a probabilistic window of rock exposure rather than a precise completion date.
Key Variables in Limestone Weathering
The primary vulnerability of the REM model lies in an unverified core assumption. The method assumes limestone erodes at a steady, consistent rate across millennia. Egypt experienced dramatic climate shifts, including the African Humid Period, which brought significantly heavier rainfall than the region sees today. That intense moisture would have accelerated surface wear unevenly.
Additional environmental factors complicate the calculations. Wind abrasion, periods of sand burial, biological activity from microorganisms, and heavy modern tourism all contribute to physical deterioration. Furthermore, the model assumes that the compared surfaces shared identical initial compositions and finishes before exposure began.
Did you know?
Very few original limestone casing stones remain at the base of the Great Pyramid today.
Established Archaeological Chronology
Mainstream egiptology places the construction of the Great Pyramid around 2560 B.C. during the Fourth Dynasty. This timeline relies on a wide convergence of data rather than a single testing method. Archaeologists connect the monument to the broader evolution of Old Kingdom architecture, pottery discoveries across the Giza plateau, and contemporary inscriptions found in nearby tombs and quarries.
_Old_Kingdom_-_(MeisterDrucke-426879).jpg "Study Challenges Great Pyramid Age and Claims It Is 20,000 Years Older")
Radiocarbon testing reinforces the accepted historical framework. Researchers routinely analyze organic materials linked to monumental sites, including plant remains and charcoal embedded in ancient mortar. These organic samples suffer far less distortion from surface climate variations than exterior rock-weathering models.
Frequently Asked Questions
When was the Great Pyramid of Giza built according to mainstream archaeology?
Mainstream egiptologists date the construction to approximately 2560 B.C., during the reign of Pharaoh Khufu in the Fourth Dynasty, supported by pottery, quarry inscriptions, and radiocarbon testing.
What is the Relative Erosion Method (REM)?
Proposed by researcher Alberto Donini in a January 2026 study on ResearchGate, the REM compares limestone surfaces exposed to the elements since antiquity with surfaces protected by sand until the medieval era to estimate rock exposure times.
Has the new erosion study been peer-reviewed?
No. The study published on ResearchGate has not yet undergone independent peer review, and specialists point out that variables like ancient rainfall make limestone erosion rates difficult to standardize.
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