He says he's never found a case of drilling horizontally into an immovable stone face. Holes in the Great Pyramid's portcullis granite slabs, found outside the monument, are rare examples of drilling in stone now lying on its side. Sarcophagus lids were likely drilled upright, then turned 🪨
Video argues sarcophagus lids were drilled upright, then turned on their sides
Key facts
- Responding to viewer questions, the presenter says he is unaware of any example where a hole was drilled horizontally into an immovable, fixed stone face.
- He cites holes in the granite slab of the Great Pyramid portcullis, found outside the monument, as a rare example of drilling in stone now lying on its side.
- For sarcophagus lids, whose holes are now on their side, he argues the lid was stood on end and drilled from above and then turned over.
- His rig does not work when held on its side, so the sequence of drilling vertically and then repositioning the block is presented as the required order of operations.
- He notes that a block's present orientation does not necessarily reflect its orientation when drilled, since the worked face can be placed upward for drilling.
Sources
XI The Antechamber of the Portcullis . If you have got here, ...greatpyramidexplanation.com
The concrete restoration correctly follows the contours of the four grooves and also simulates the color of granite (photo D10). Unfortunately ...
modern evaluation of egyptian pyramid designs ...academia.edu
These stones slabs, which are called "portcullises", were supported at their sides, encased in vertical grooves at the east and west walls, is slabs are at 51. ...
Inside the Great Pyramid: A Chamber-by-Chamber Overviewancientnavigator.com
The portcullis slabs are positioned in a series of vertical slots along the passage's walls, creating a formidable barrier that could be raised or lowered
Great Pyramid of Gizaen.wikipedia.org
small chamber designed to house portcullis blocking stones, called the Antechamber. It is cased almost entirely in granite
Construction of the Great Pyramid with pulley-like systems ...nature.com
by SA Scheuring · 2025 · Cited by 2 — According to general models, the portcullis granite slabs had to be mounted during pyramid construction, as the slabs should not easily be ...
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