In my opinion, the pyramids, in Egypt and elsewhere, were not made to be tombs for megalomaniac kings or queens. There is just no evidence for it. It is just a theory to which archaeologist cling. Some people have suggested they were built as energy devices, and maybe also for initiatory purposes. There is a lot of evidence for highly sophisticated technology of those who made them. We can situate the architects and builders in ancient times, that is, during the Atlantean Epoch, more than twelve thousand years ago.
At one point something went wrong with the technology and explosions happened, damaging and even destroying some pyramids. One of them is the Northern Pyramid of Zawyet El Aryan, close to the Giza plateau with its famous pyramid trio. The upper structure is mostly rubble now, but the subterranean structure remained intact.
Why did you never hear of this pyramid? Because it was excavated once once, in the early 1900’s. Now it is in a military district. Although it has some intriguing mysteries the information on the web is inaccurate. That is why I went to the original reports, in which is a detailed description of the mysterious structures inside the subterranean space of the pyramid.
Read more in my article of The Northern Pyramid of Zawyet El Aryan: Signs of Ancient Atlantean Technology.