This stuff always drives me crazy.
Look at how straight the inside walls are of this sarcophagus, and the sharp right angle cuts of the interior.
This is quartzite and was made using crude had tools nearly 4000 years ago? It’s like the pyramids at Giza.
Giza pyramids are so far superior to all other Egyptian pyramids - it is obvious that what we’re seeing was made with technology beyond what the ancient Egyptians of circa 4000 years ago possessed.
I’m a big fan of the geopolymerization explanation.
http://www.freerepublic.com/tag/geopolymerization/index?tab=articles