Thinking about the origin of the pyramids today got me thinking wether there purpose has been misrepresented over the past few thousand years.
Much of what we think we know about them is that they are Burial Chambers for Kings, with passageways to the heavens. Built by "slaves" who worked their entire lives to make these great monuments for their leaders.

However a thought occured to me today, with the recent discovery of the underground caves and the Pyramids close location to the ancient source of the Nile, maybe the Pyramids were a sort of "Fountain", which using a Vacuum effect sourced water from the Nile and created Fertile land around vast areas of the Desert for millenia.

The workers werent slaves but rather held the belief that after the Kings had died, their bodies would purify the water even more so and make the ground even more fertile with the blessing of the Gods for their creation and devotion towards them.

Another Theory I had thought of was the enhanced tunneling beneath the Pyramids, the location was obviously chosen because of the natural caves but they needed to be extended to enhance the Vaccum effect and water displacement on the surface, one thing I had thought of was that we know there has been Meteor impacts in the Desert and such glass fragments called Tektites occur in these areas where Sand and Heat are fused together. What if Glass was discovered by the Egyptians who then used it to create Mirrors, this could explain how they got natural light into the Natural Caves beneath the Pyramids, and why theres no Soot had they used fire. Infact Ra the Sun God they worship, commands the Sun, the Earth and the Underworld.