The Mysterious Granite Tube Drills From Ancient Egypt (History Drops)

The mysterious granite tube drills of ancient Egypt! Ben Van Kerkwyk explains the long and disputed, yet still mysterious, granite core drills found in Egypt. These core drills can be found all over the ancient sites, in various sizes. The mysterious part is the cutting rate that these holes were made. Incredible even for todays engineers.



[Posted at the SpookyWeather2 blog, February 16, 2026.]