A corridor-shaped void above the Grand Gallery in Khufu’s Great Pyramid was detected with cosmic-ray muons and reported in 2017. A 2023 analysis estimated it at at least 38m (about 125ft) long, with a cross-section comparable to the Grand Gallery. It remains unexcavated: the video says no plan exists and suggests a roughly 1-inch hole for a camera. The video also floats a tomb, construction evidence, treasures or lost tools as possible contents, but none is established. Zahi Hawass dismissed the 2017 announcement as nothing new. 🔬📜
Great Pyramid’s at least 38m void remains unexcavated after 2023 muon study

Key facts
- The void was detected in 2016 and reported by Morishima et al. in Nature in 2017.
- A 2023 Nature Communications analysis refined its length to at least 38m (about 125ft), rather than the earlier minimum of 30m.
- Its cross-section is comparable to the Grand Gallery; it is not larger than the Grand Gallery.
- The void was detected non-invasively using cosmic-ray muon radiography.
- The video says no drilling or excavation plan had been announced and proposes a roughly 1-inch-diameter hole for a camera.
- Zahi Hawass criticized the 2017 announcement, calling it “nothing new.”
- The video discusses a pharaoh’s tomb, construction evidence, treasures and lost tools as possible contents, but none is established.
Sources
Discovery of a big void in Khufu's Pyramid by observation of cosmic ...pubmed.ncbi.nlm.nih.gov
Here we report the discovery of a large void (with a cross-section similar to that of the Grand Gallery and a minimum length of 30 metres) situated above the ...
Found: A Large 'Void' Inside the Great Pyramid of Giza - Atlas Obscuraatlasobscura.com
A team of scientists from Japan, France, and Egypt have found evidence that there is an empty space at least 98 feet long above the Grand Gallery.
Muons unveiled new details about a void in Egypt's Great Pyramidsciencenews.org
The new muon measurements indicate that the void is a 9-meter-long corridor about 2 meters wide by 2 meters tall, close to the pyramid's north face.
'Big void' identified in Khufu's Great Pyramid at Giza - BBCbbc.com
Scanning technology suggests there is a large, previously unknown cavity in the ancient monument.
Inside Giza's Great Pyramid, Scientists Discover a Voidnytimes.com
Using a technique from particle physics, researchers detected a 100-foot-long space within the monument, but Egyptologists questioned the ...
Precise characterization of a corridor-shaped structure in ...nature.com
by S Procureur · 2023 · Cited by 56 — In this paper, we report on the first precise analysis of the void found with cosmic-ray muon radiography behind the North Face Chevron and ...
Discovery of a big void in Khufu's Pyramid by observation ...ui.adsabs.harvard.edu
by K Morishima · 2017 · Cited by 705 — To understand its internal structure better, we imaged the pyramid using muons, which are by-products of cosmic rays that are only partially absorbed by stone.
Mysterious Void Discovered in Egypt's Great Pyramidnationalgeographic.com
Discovery of a big void in Khufu's Pyramid by observation of cosmic-ray muons. Nature. BUILT TO LAST. The findings mark the latest in a ...
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