Pyramids and the sunset. Shutterstock.

3 Anomalies Found Inside the Great Pyramid Scientists Can’t Explain

The Great Pyramid of Giza: Thousands of years worth of mystery.


The Great Pyramid of Giza is a monument like no other. It has survived (according to mainstream history) for more than 4,500 years since its completion, withstanding the forces of nature and the control of different civilizations. As a result, it has remained, to this date, the only standing ancient wonder of the world. The road to its completion was a long one and involved the entire history of ancient Egypt. The Great Pyramid of Giza resulted from a long line of architectural and religious innovations that slowly manifested within the ancient Egyptian civilization, beginning as early as pre-Dynastic Egypt. It was an evolution of different building styles, materials, and religious practices. As architecture in ancient Egypt evolved, so did their tombs and religious practices.

Pyramid Evolution

Slowly but surely, around the reign of Pharaoh Djoser, the ancient Egyptians left behind lesser structures and started using them in a more frequent manner stone. Thus, Djoser revolutionized ancient Egyptian building styles, and ancient Egypt took its first steps toward producing superstructures made of stone. Eventually, the royal Vizier Imhotep, Pharaoh Djoser’s royal architect, would design a structure never before attempted in ancient Egypt. It was a kind of stepped mastaba, rising high into the air. It was a building like no other, officially giving rise to the Age of Pyramids in ancient Egypt. After the completion of the Step Pyramid of Djoser were countless pyramids. Some of them were total successes, while others were a failure.


The ancient Egyptians experimented with different angles, different stones, and mortars. As a result, they changed the way pyramids looked and elaborately developed the complexes built around the pyramid. It was an evolution of masonry. It was an evolution of pyramid-building techniques. And evidence of that evolution can be found if we look at the collapsed pyramid at Meidum. What started as a step pyramid, as introduced by Djoser, was changed into a kind of true pyramid shape, where the pyramid was redesigned from a step pyramid to a smooth-sided one. The structure at Meidum failed.

The Bent Pyramid of Ancient Egypt. Shutterstock.

But the next few pyramids are evidence of ancient Egyptian ingenuity.

The Bent Pyramid, built under the reign of Pharaoh Sneferu, is the most unique example of early pyramid development in ancient Egypt. This structure was initially envisioned with a 54-degree inclination, but due to the extreme steepness of the structure, which may have compromised the structural integrity of the pyramid, the ancient builders constructed the top of the pyramid with a much shallower angle of 43 degrees, giving the pyramid its very obvious ‘bent’ appearance. The Pyramids that followed were more sophisticated and better in terms of quality and design. After the Bent Pyramid, Sneferu built the so-called Red Pyramid or Northern Pyramid. Once completed, it was the largest pyramid ever built in ancient Egypt. Eventually, Khufu became the Pharaoh of Egypt, and he started the construction of a building that would forever be imprinted in the history of humankind; The Great Pyramid of Giza, aka Khufu’s Great Pyramid.

The story of Khufu’s Great Pyramid

Sneferu’s Great Pyramid was the largest pyramid on Earth when it was completed by the Old Kingdom Pharaoh Sneferu just a kilometer to the north of the Bent Pyramid. Estimated to have been completed in around 17 years, the Red Pyramid is 105 meters high. Then came Khufu, and the Age of Pyramids of ancient Egypt reached its peak. According to mainstream archaeologists, Khufu wanted to surpass his father’s achievements, King Sneferu. Hence, he commissioned a structure that would remain written in history as the largest the country ever saw. The Great Pyramid was designed, planned, and construction started. The size of the project was never attempted in ancient Egyptian history, and to complete the pyramid, the ancient builders had to be at their best. Everything needed to work flawlessly and is supposedly done. Egyptologists calculate that the pyramid builders managed to construct the Great Pyramid of Khufu in a record time of 20 years.

Although this chronology is debated, it is the most accepted theory regarding pyramid building timeframe.

Great Pyramid of Giza with the sun in the background. Shutterstock.

Khufu’s vizier and royal architect, Hemiunu (also called Hemon), is believed by some scholars to be the architect of the Great Pyramid. Once finished, the pyramid is believed to have been 146.5 meters tall, but erosion and the absence of its pyramidion (which has never been found) gives the structure its current height of 138.8 meters. Scholars have calculated that the great pyramid was originally 280 Egyptian Royal Cubits tall upon completion. It is mind-boggling to try and imagine the methods and procedures ancient builders went through thousands of years ago to build a behemoth structure like the Great Pyramid.


But when you come to think about it, just as today we plan, design, and calculate before laying the foundations for a building, the builders of the Great Pyramid of Giza had to do the same. You can’t possibly build a structure comprising 2.3 million blocks of stone without planning. The builders of the Great Pyramid managed to construct a structure that would stand the test of time. And with a weight of around 6 million tons, the builders ensured the structure would survive almost everything thrown at it. The successful completion of the Great Pyramid resulted in the tallest structure on the surface of the planet for 3,800 years. The pyramid’s precision is another remarkable feature. The accuracy of the pyramid’s workmanship is such that the four sides of the base have an average error of only 58 millimeters in length.

The completed structure had a weight of around 6 million tons.

According to John Romer in his Book “The Great Pyramid, Ancient Egypt Revised,” it is estimated that the ancient Egyptians used 5.5 million tons of limestone, 8,000 tons of granite, and 500,000 tons of mortar to build Khufu’s Pyramid. Can you imagine the logistical perfection needed to achieve all of this? Approximately 8,000 tons of limestone were transported to Giza from Aswan, located around 800 kilometers away. It was an unprecedented attempt, and it was completed resulting in a true wonder of the ancient wonder. But the beauty of the Great Pyramid resides not only in its exterior but in its interior, which is mysterious beyond imagination.

An image of the pyramid and the night sky. Shutterstock.

Although we’ve explored the inside of Khufu’s pyramid in great detail, numerous features still continue to elude us. The pyramid’s original entrance faced north, around 17 meters (56 ft) vertically above ground level and 7.29 meters (23.9 ft) east of the centerline of the pyramid. The pyramid has three known chambers inside. The lowest chamber was cut directly into the bedrock upon which the pyramid was eventually built but was left unfinished. Thus, most of what we know about the pyramid, its construction, and the Pharaoh, who is said to have commissioned it, comes from its exterior. The structure’s interior remains shrouded in countless mysteries, and the more we explore, the more it baffles us.

Mystery Void

For decades scholars have thought we’ve explored everything there is to explore inside the Great pyramid. But as technology moves forward, so do the tools we have at our disposal to study and analyze the pyramids. In 2017, researchers reported discovering a previously unknown, hidden void resembling the pyramid’s Grand Gallery in dimensions. The exact purpose and content of the mysterious chamber inside the pyramid remain a mystery. Researchers have even suggested it is not one but several spaces that appear as one. The discovery is exciting since it is the first larger inner structure that has been identified inside the pyramid since the 1800s. The details about the mystery void were published in the journal Nature. Archaeologists have dubbed the find “the discovery of the century.”

The location of the "Big Void" illustrated within the Great Pyramid of Giza. Image Credit: ScanPyramids mission.
The “Big Void” location is illustrated within the Great Pyramid of Giza. Image Credit: ScanPyramids mission.

The mysterious void was made thanks to the ScanPyramids project, an international archeological mission led by the Egyptian Ministry of Antiquities, launched in 2015. Its goal is to study ancient Egyptian structures using non-invasive methods. The enigmatic cavity within the pyramid, dubbed by experts as “The Void,” is at least one hundred feet long. Some researchers have proposed that it is one of many other hidden chambers inside the pyramid. One of these chambers may even hide the Pharaoh’s mummy, others have ventured out saying. Although not much is known about the void, we see that it aligns to the Great Pyramid’s upper chambers, installed by its builders to relieve pressure on the king’s chamber below.

Thermal Anomalies

In 2015, it was reported that researchers using thermal cameras to scan the Great Pyramid of Giza found mysterious hot spots within the pyramid. The Egyptian Antiquities Ministry announced that a thermal scan of the three ancient Pyramids at the Giza plateau, in particular, a scan of the Great Pyramid, has revealed unusually higher temperatures in three of the stones of the pyramid, located at the bottom of the structures east wall.

Seen here is the thermal anomaly inside the Great Pyramid of Giza. Image Credit: HIP Institute / Philippe Bourseuller.
Seen here is the thermal anomaly inside the Great Pyramid of Giza. Image Credit: HIP Institute / Philippe Bourseuller.

Although the researchers do not know what the thermal anomalies mean or represent, these could indicate either empty areas inside the pyramid or a different composition of the construction materials. The ScanPyramids project also made discoveries of thermal anomalies. The researchers have revealed that the thermal anomaly found inside the Great Pyramid of Giza was a staggering six degrees warmer than its surrounding bricks. So, what’s heating up inside the Great Pyramid, I wonder?

Electromagnetic Properties

In addition to mysterious, previously unknown chambers hiding inside the pyramid and areas with thermal anomalies, another sensational and bizarre aspect of the Great Pyramid was revealed when researchers found that Khufu’s pyramid can focus electromagnetic energy. In 2018, scientists from the ITMO University (Russia) and the Laser Zentrum Hannover (Germany) discovered that the pyramid of Giza focuses electromagnetic energy inside its chambers and well beneath its base, where the unfinished chamber of the pyramid is located.

Propagation of electromagnetic waves inside the pyramids of Cheops at different lengths of radio waves (from 200 to 400 meters). The black rectangular position of the so-called King's Chamber. Image Credit: ITMO University, Laser Zentrum Hannover.
Propagation of electromagnetic waves inside the pyramids of Cheops at different lengths of radio waves (from 200 to 400 meters). The black rectangular position of the so-called King’s Chamber. Image Credit: ITMO University, Laser Zentrum Hannover.

By calculating the extinction cross-section, scientists were able to estimate how the energy is scattered and absorbed by the structure. Multipole analysis confirmed that the scattered fields concentrated within the pyramid’s chambers and beneath its base. The researchers explained in their paper: “Applications of modern physical methods and approaches for investigations of pyramids’ properties are important and productive. It could allow [us] to make discoveries or get new information motivating new interests [in] the pyramids.”

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Written by Ivan Petricevic

I've been writing passionately about ancient civilizations, history, alien life, and various other subjects for more than eight years. You may have seen me appear on Discovery Channel's What On Earth series, History Channel's Ancient Aliens, and Gaia's Ancient Civilizations among others.

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