Deep square shafts are known at sites like the Step Pyramid and Zawiyat, but none approach claimed depths. The Osiris shaft at Giza is about 25 feet deep and was used as a water source in ancient times. Similar features were found at Zawiyah, Abu Roach, and other locations. Some shafts have regular depths of a couple hundred feet. The Scan Pyramids project found some voids using muography and thermal imaging, with verification remaining ongoing.
Comparison to other Egyptian deep structures

Key facts
- Known deep square shafts exist at Step Pyramid and other sites
- The Osiris shaft goes deep but not 648 meters
- Similar features found at Zawiyah, Abu Roach, and other locations
- Some shafts have regular depth of couple hundred feet
- The Scan Pyramids project found some voids using GPR
Sources
The Osiris Shaftguardians.net
The Osiris Shaft is located under the causeway of Khafre, and it is about 25 feet deep. In ancient times people used the water-filled shaft as a ...
[PDF] The Discovery of the Osiris Shaft at Giza - Harvard Universitygizamedia.rc.fas.harvard.edu
The entrance to the Osiris Shaft lies in the floor of a shallow tunnel that runs from north to south under the causeway of Khafre, approximately halfway between ...
The Osiris Shaft | Uncovering Egypt's History - Britannicabritannica.com
Learn about the Osiris Shaft, a symbolic tomb of the god Osiris that is near the pyramid of Khafre, near Giza, Egypt.
What Is The "Osiris Shaft" In Giza Egypt, Who Made It, And When?hiddenincatours.com
It's known today as the Tomb of Osiris or, more commonly, the Osiris Shaft. The latter was named by Zahi Hawass, former secretary general of the Supreme Council ...
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