There are some that believe that the Ark of the Covenant was kept in the Great Pyramid until Moses needed it.The pyramids of the Giza Plateau are considered to be unexplained engineering of the ancient world.

   Legends state that teams of 10,000 slaves labored for ten years to a build a ramp for the blocks; another twenty years to build the pyramid, then another ten years to put the casing stones on the pyramid, starting from the top and working down the pyramid.

  An inscription at the base of the pyramid told of how many onions and radishes it took to feed the slaves. There isn't any archeological evidence to support these legends as of yet.

   P. Garde Hansen a Danish engineer calculated the amount of material that it would have taken to build the ramp leading to the top of the pyramid.

   He calculated it would have taken seventeen and a half million cubic yards of material. This figure is seven times more material then was needed in the building of the pyramid itself.

   The placing of limestone casing stones weighing over ten tons each is still not addressed. However the hats on top of the statues on Easter Island which stand sixty feet in the tall also weighed ten tons each and are of a different stone then that of the statues.
 
This makes one take a serious look at the Sacred Knowledge that our ancient ancestors obviously had acquired. Was the Sanskrit-Manna at play here, perhaps?

  It has been reported that Pharaoh Zoser built the first pyramid in 2750 BC. According to the ancient text “Famine Stele” which was discovered a hundred years ago in Egypt near Elephantine, it consisted of 2600 hieroglyphic characters of which 650 have been interpreted.

 These interpretations were dealing with stone fabrications. The texts claim that an Egyptian god gave Pharaoh Zoser instructions on how to fabricate stone!

   In these instructions were a list of 29 minerals that could be processed with crushed limestone and other natural ingredients to produce a synthetic stone which was used in the construction of the pyramid.

   Egyptians named these stones after their physical properties, “onion ore, garlic ore and horseradish ore. These stones also gave off odors of their ingredients. There were also arsenic, phosphates from bones and animal waste, Nile silt, quartz and limestone.

  The ingredients were mixed with water and poured into wooden forms much like concrete contractors do today. It is thought that the cement used in the construction of the pyramids binds the ingredients together in a process that occurs in the formation of natural stone.
 
 This means that the synthetic stone is extremely difficult if not impossible to distinguish from natural stone.  Egyptian cement lasts thousands of years, while natural cement  that is made today only lasts around 150 years, this in part is because the Egyptian cement is molecularity bonded and today’s cement is mechanically bonded and mixed.This seems quite a process and an engineering feat that hasn't been duplicated to this day! What exactly was the purpose of the pyramids?

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 The historic perspective was that the pyramids were tombs of pharaoh's but evidence doesn't support this theory There has never been a mummy or the remains of anyone ever found in a pyramid!

 Egyptian mummies and the remains of pharaoh's have been found in underground tombs, carved out of rock, primarily in the Valley of the Kings, where Pharaoh Tutankhamen, his father Pharaoh Akahaten, and his father  Pharaoh Amonhotep III were discovered.

  It is a historical fact that the funeral celebrations took place at the pyramids but the pharaoh’s were never found in them, the pharaoh’s were found in tunnels and vaults carved into solid stone which took years to prepare.
 
 This is not to say that they weren't kept in the pyramids for a short time and then moved to one of the vaults.There are ten pyramids in the Valley of the Kings, none have remains in them, but all have a tunnel system that lead under the Giza Plateau and ends in the Sphinx with several connecting vaults along the way. All of these pyramids have burial chambers in them, without human remains.