On July 8, 1765, British consul Nathaniel Davison discovered the first relieving chamber above the King's Chamber in the Great Pyramid of Giza. He climbed a tall ladder assembled from seven smaller ladders, then crawled through a narrow, guano-filled passage while his French companion Maynard turned back. His account was read before the Royal Society in November 1765.
British consul Nathaniel Davison discovers first relieving chamber in 1765

Key facts
- British consul Nathaniel Davison discovered the upper, or first, relieving chamber above the King's Chamber on July 8, 1765.
- Davison crawled through a narrow passage filled with roughly a foot of bat guano; his French merchant companion Maynard turned back because of the dust and poor air.
- Access required careful planning and a tall ladder assembled from seven smaller ladders.
- Davison's account was read before the Royal Society in November 1765, not November 1764.
- Giovanni Battista Caviglia's 1818 expedition rediscovered the upper chamber and discovered the lower relieving chamber; it was not a competing original discovery.
- Egyptologist Mark Lehner cited the possibility in his 1997 and 2017 books that Karsten Niebuhr's 1761 expedition knew of, or heard about, the chamber before Davison.
Sources
(PDF) THE GREAT PYRAMID ITS DIVINE MESSAGEacademia.edu
The author claims a divine message encoded within the structure, which reflects a cultural pattern and suggests a historical perversion of Messianic prophecies.
The Great Pyramid: Its Divine Message by D. Davidsongoodreads.com
D. Davidson, H. Aldersmith ... This is the premier source work on pyramid study. An Original Co-ordination of Historical Documents and Archaeological Evidences.
The Great Pyramid Its Divine Messagebooks.google.com
The Great Pyramid, Its Divine Message is a book written by D. Davidson that explores the mysteries and symbolism of the Great Pyramid of Giza.
Nathaniel Davisonen.wikipedia.org
He discovered a space in the Great Pyramid, now known as "Davison's Chamber", or "first relieving chamber". Nathaniel Davison. Born, c. 1736.
A Survey of Pyramid Teachingministrymagazine.org
3. David Davidson, the most important interpreter, in his remarkable work The Great Pyramid: Its Divine Message (1932 edition), boldly states : "According to ...
(PDF) Nathaniel Davison (1737-1809) Diplomat and traveleracademia.edu
Davison accurately measured the Great Pyramid's height at 460 ft 11 in (≈ 140.49 m) in 1764. His measurements of the niche tunnel and Queen's Chamber are ...
Egypt 39: Inside the Great Pyramid - From Off the Beaten Pathfromoffthebeatenpath.com
... Nathaniel Davison, in 1765. To give you a reference about the size of that tunnel, on my hands and knees, my back brushed against the top ...
Grande Pyramide : la découverte de la première chambre ...pyramidales.blogspot.com
La première chambre dite “de décharge” dans la Grande Pyramide porte le nom de Nathaniel Davison, consul britannique à Alger en 1763.
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