Back in 2000 or so, Mr Goerlitz and Mr Erdmann paid off some Egyption authorities for a plan they had. Many people don't realise The Great Pyramid has NO hieroglyphs in it, and NO bodies. Yet officials say it's a 2 to 4 thousand year old burial chamber. Many smaller pyramids are covered inside with hieroglyphs, and sarcophagi. The Great Pyramid is a unique mystery in that regard.
In 1837, Colonel Howard Vyse went poking around and "found" a couple of scribbles in the pyramids structure in red pigment. Mentioning an Egyptian king... and therefore dating the pyramids. Until then it was impossible to date them because bare stone can't be dated.
Some people think the Great Pyramid is ANCIENT, many more thousands of years earlier than thought, but for that to remain a possibility the red cartouche would need to be found to be a forgery - written by Vyse himself. This is possible - there's only a bit of scribbled ink in the whole pyramid! No hieroglyphs... So Mr Goerlitz and Mr Erdmann made off with some pigment, got in lots of trouble, but were able to get it to Dresden University in order to date the cartouche.
If it was found to be dated around 1800's... that would mean NO writing from the time of the pyramid being built exists in the entire multi million tonne building, and as stone cannot be carbon dated - the building of the Great Pyramid itself then becomes wide open to discussion again, and can possibly be 10,000 years older than thought. There is NO mention of the Great Pyramid in any Egyptian hieroglyphs to help out with dating it.
If the pigment dates to around 2500 BC... it would confirm the text was written when the official build date said it was, confirming official sources.
The only issue?
Dresden University has been silent since 2005 on anything to do with the dating.
They may be sitting on the most upsetting Egyptian finding since the actual Egyptian tombs were raided - that the Great Pyramid is in fact much more ancient than any of the surrounding pyramids in all of Egypt. This would bring who the builders were into question. The timeline of many Egyptian events... It would be huge. A much more ancient building than thought would explain why there are no Egyptian hieroglyphs inside - the Pyramid wasn't opened until long past the Old Kingdom's passing, and so there were no Egyptians with access who would decorate the Pyramid internally.
Try a search for yourself, I still haven't found any results: "Goerlitz and Erdmann Dresden University dating cartouche"
Also interesting is that the Pyramid was supposed to have been covered by a layer of limestone blocks which have since been removed/repurposed. Thus we can't really learn much about the Great Pyramid from external weathering.
it's actually 8 sided, each of the 4 sides is really two slightly concave sides. I agree about the outer white layer but I heard it was limestone? in any case I think you're right, it probably was a giant power plant of some sort.