Great Pyramid of Giza
The best-documented construction site of the ancient world — a 4,500-year-old inspector's logbook, an excavated workers' town, and muon physics still uncovering unknown voids.
- Location
- Egypt · Near East
- Civilisation
- Egypt, 4th Dynasty (Khufu)
- Period
- ~−2560
- Technique
- 2.3 million blocks, ~6 Mt, ~20 years
- Studies
- thousands of publications
real support, not settled. A revisable snapshot of the state of research, never a judgement.
→ Show on the mapThe elements of the site
Where the site is
29.980° N, 31.130° E · satellite view
What science says
The Diary of Merer (Wadi al-Jarf, ~2560 BC): the logbook of an inspector ('sḥḏ') delivering limestone blocks from Tura to Akhet-Khufu (the Giza complex), dated to about year 27 of Khufu's reign — the oldest direct written evidence of the construction project.
The workers' town (Lehner/AERA): bakeries, dormitories, rations — a state-fed construction project, not slaves.
Crew graffiti in the relieving chambers and C14 dates consistent with the 4th Dynasty.
ScanPyramids (muography, 2017-2023): a 'big void' of minimum length 30 m above the Grand Gallery (Nature 2017, DOI 10.1038/nature24647) and a north corridor of ~9 m behind the north face (Nature Communications 2023, DOI 10.1038/s41467-023-36351-0) — two unknown structures revealed by particle physics.
The alignment to true north within ~3 arcminutes is documented by geodetic survey. The method used by the builders remains debated: simultaneous transit of the stars Kochab-Mizar (Spence, Nature 2000, DOI 10.1038/35042510) or the Phecda-Megrez pair (Belmonte, 2001, DOI 10.1177/002182860103202601). Both hypotheses invoke celestial precession to explain the residual discrepancy.
What remains unexplained
Echoes across time
Cosmic muons revealed two unknown voids in Khufu's pyramid. Fundamental physics becomes an archaeology tool.
ScanPyramids · Nature (2017) · Nature Comm. (2023)
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