Ancient quarry ramp system may have helped workers build Egypt's Great Pyramids
https://phys.org/news/2018-11-ancient-quarry-ramp-workers-egypt.html
Egyptologist, Dr. Roland Enmarch said: "The Hatnub quarries were the most prestigious source for Egyptian alabaster, the milky white banded stone which was much beloved of Egyptian civilisation.
"Their importance today lies in the fact that they are archaeologically very well preserved.
