anon, egypt during the reign of greekoids (post alexander's conquest) could no longer read hierogroyphs practice was decreased even earlier - after the egypt fell to persians and carbon dating / other modern techniques were not invented for the next 1900 years answer me then - why would anyone try to "hide" the knowledge of the pyramid's age, if noone had such knowledge? it makes for a nice novel or an exciting hollyslop, but seriously - how?
Poland