Editing Great Pyramid of Giza (section)

==== Original entrance ====
The original entrance is on the north side, {{convert|15|royal cubit|m+ft|1|lk=in}} east of the centreline of the pyramid. Before the removal of the casing in the Middle Ages, the pyramid was entered through a hole in the 19th layer of masonry, approximately {{convert|17|m|ft}} above the pyramid's base level. The height of that layer – {{convert|96|cm|ft}} – corresponds to the size of the entrance tunnel that is commonly called the Descending Passage.{{sfn|Maragioglio|Rinaldi|1965b}}{{sfn|Haase|2004b|p=15}} According to [[Strabo]] (64–24 BC) a movable stone could be raised to enter this sloping corridor; however, it is not known if it was a later addition or original.[[File:Cheops-Pyramid@Eingaenge.JPG|left|thumb|upright|The original entrance (top-left), Robbers' Tunnel (middle-right)]]

A row of double chevrons diverts weight away from the entrance. Several of these chevron blocks are now missing, as indicated by the slanted faces on which they once rested.

Numerous, mostly modern, graffiti is cut into the stones around the entrance. Most notable is a large, square text of hieroglyphs carved in honor of [[Frederick William IV of Prussia|Frederick William IV]], by [[Karl Richard Lepsius]]'s Prussian expedition to Egypt in 1842.<ref>{{Cite web|title=The Hieroglyphic Inscription Above the Great Pyramid's Entrance|url=http://www.catchpenny.org/gpglyph.html|access-date=}}</ref>

===== North Face Corridor =====
In 2016 the [[Scanpyramids|ScanPyramids]] team detected a cavity behind the entrance chevrons using [[muography]], which was confirmed in 2019 to be a corridor at least {{Convert|5|m|ft}} long, and running horizontal or sloping upwards (thus not parallel to the Descending Passage).<ref>{{Cite news|title=#ScanPyramids – First conclusive findings with muography on Khufu Pyramid|url=http://www.hip.institute/press/HIP_INSTITUTE_CP9_EN.pdf |archive-url=https://web.archive.org/web/20161019155509/http://www.hip.institute/press/HIP_INSTITUTE_CP9_EN.pdf |archive-date=2016-10-19|url-status=live}}</ref><ref>{{Cite web|title=ScanPyramids 2019 English Video Report|date=16 November 2019|url=https://vimeo.com/373622564}}</ref>

In February 2023 the North Face Corridor was explored with an endoscopic camera, revealing a horizontal tunnel with a length of {{Convert|9|m|ft}} and a transverse section of about {{Convert|2 by 2|m|ft}}. Its ceiling is formed by large chevrons, like those visible above the original entrance and also similar to relieving chambers.<ref>{{Cite journal |date=2 March 2023 |title=Precise characterization of a corridor-shaped structure in Khufu's Pyramid by observation of cosmic-ray muons |journal=[[Nature Communications]] |volume=14|bibcode=2023NatCo..14.1144P |last1=Procureur |first1=Sébastien |last2=Morishima |first2=Kunihiro |last3=Kuno |first3=Mitsuaki |last4=Manabe |first4=Yuta |last5=Kitagawa |first5=Nobuko |last6=Nishio |first6=Akira |last7=Gomez |first7=Hector |last8=Attié |first8=David |last9=Sakakibara |first9=Ami |last10=Hikata |first10=Kotaro |last11=Moto |first11=Masaki |last12=Mandjavidze |first12=Irakli |last13=Magnier |first13=Patrick |last14=Lehuraux |first14=Marion |last15=Benoit |first15=Théophile |last16=Calvet |first16=Denis |last17=Coppolani |first17=Xavier |last18=Kebbiri |first18=Mariam |last19=Mas |first19=Philippe |last20=Helal |first20=Hany |last21=Tayoubi |first21=Mehdi |last22=Marini |first22=Benoit |last23=Serikoff |first23=Nicolas |last24=Anwar |first24=Hamada |last25=Steiger |first25=Vincent |last26=Takasaki |first26=Fumihiko |last27=Fujii |first27=Hirofumi |last28=Satoh |first28=Kotaro |last29=Kodama |first29=Hideyo |last30=Hayashi |first30=Kohei |issue=1 |page=1144 |doi=10.1038/s41467-023-36351-0 |pmid=36864018 |pmc=9981702 |s2cid=257259769 |display-authors=1 }}</ref><ref>{{Cite web |title=ScanPyramids North Face Corridor 2023 Report |date=March 2023 |url=https://vimeo.com/803685954}}</ref>