The mighty structures of Giza
Pharaoh Khufu was the one who built the first and biggest pyramid in Egypt during his reign in 2551 BC. This mighty structure is known as the Great Pyramid of Giza today and it stands at the height of 455 feet. It is considered to be one of the biggest wonders and mysteries of the world.
A lot of discoveries related to the pyramids have been made by researchers, including a town built near the pyramid of Menkaure, a study showing how water can make blocks easier to move and a papyrus found by the Red sea. Over the years, many scientists have tried to bring together clues as to how these massive towers were created. To this day, the mystery is still not fully solved. No one truly knows just how it was done. But there have been plenty of explanations and theories concerning this.
Some construction theories
1) Alien Intervention
This theory suggests that the pyramids built were too advanced to be built by the men in that age. Given everything we know about the pyramids, it is not rational to conclude that the ancient cultures could have built these incredible structures on their own. Thus, the answer to the construction of the pyramids is Extraterritorial invasion.
Even though mainstream scholars deny this theory, there is are number of historians who support it. It is said that even with the advanced technology that we have in this age, it is not possible for us to build pyramids like the ones in Egypt. Thus, this is a completely natural theory.
2) The pyramids were actually hills
One of the most ridiculous and bizarre theories, this was proposed by a conference of scientists in 1884. This theory suggests that the pyramids originally were natural mountainous formations. The pyramids were constructed by laying the rocks on these hills from top to bottom.
3) Early age machines
It is obvious that while constructing any kind of structure, there is a need of machines or cranes to lift and carry heavy material. However, there is almost no possibility that the great pyramids of egypt used cranes as the surfaces of these pyramids were too small to fit pyramids.
Thus, it is certain that the ancient cultures used levers and pulley systems or somethings like these to construct the first pyramids. However, to explain how to build the geometric pyramids that are found at Giza, even nore advanced methods are needed which we are not aware of as yet.
4) Wetting the sand
This theory came from a painting that was found on the tomb of Djehutihotep from 1900 BC. It shows a group of men dragging a statue on a sled, while in front another person pours water on the sand. Some advocates believe that the same method was used to bring the stones to the construction sites.
The pyramid stones were moved over piles of sand that were made wet so that they could more easily drag the stones without causing friction. Most of the Egyptians agree with this interpretation of the painting. This would explain the transportation technique used for carrying heavy stones from kilometers away to the site of the pyramids.
Conclusion
There are various other theories that explain the transportation techniques, construction methods and maintainence of these pyramids. However, even after almost two decades of research, this topic remaind to be a contested concept without any officially confirmed answer.