The Great Pyramid of Giza: What Is Known, and the Void Discovered in 2017.
The last surviving wonder of the ancient world has attracted as much nonsense as awe — that it was raised by slaves, by Atlanteans, by aliens, that it encodes secret mathematics. The documented reality is plenty astonishing on its own: a tomb the height of a forty-storey building, raised around 2560 BCE by an organized Egyptian workforce who left their own records behind. And in 2017, physicists found a large room-sized space inside it that no one knew was there.
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Confidence key — claims in this file are tagged as follows Verified primary documentary support · Claimed asserted by a named party, not independently confirmed · Disputed credible sources contradict each other · Unverified we could not substantiate it · how we decide
What the Great Pyramid is, in a paragraph.
The Great Pyramid of Giza is the largest of the three pyramids on the Giza Plateau outside Cairo and the only one of the Seven Wonders of the Ancient World still standing. It was built around 2560 BCE, during the Fourth Dynasty of Egypt's Old Kingdom, as the tomb of the pharaoh Khufu (Cheops in Greek). Originally about 146.6 metres tall — it stood as the tallest human-made structure on earth for nearly four thousand years — it is made of an estimated 2.3 million blocks of limestone and granite, with an outer casing of fine white limestone that has mostly been stripped away. Its base is level to within a few centimetres and its sides are aligned to the cardinal directions with remarkable precision. Egyptology has answered the basic questions about it with hard evidence. It was built by Egyptians, not slaves and not foreigners: excavations led by Mark Lehner and Zahi Hawass uncovered the workers' settlement and cemeteries beside the plateau, showing an organized, fed, and housed labour force of skilled craftsmen and rotating crews who were buried with honour near the king they served. A papyrus archive found at Wadi al-Jarf — the diary of an official named Merer — records the transport of casing limestone to Giza, a contemporary administrative document of the project itself. The stones were raised using ramps, levers, sledges, and human muscle; the precise ramp configuration is still argued, but the toolkit is understood and required no lost technology. In 2017 the ScanPyramids project, using muon tomography — tracking cosmic-ray particles that pass through stone — detected a large previously unknown void above the Grand Gallery, at least 30 metres long. Its purpose, whether a construction feature or a sealed chamber, is unknown and under study. The genuine open questions about the Great Pyramid are of this kind: exactly how, and exactly what the void is — not whether human beings could have built it.
The Great Pyramid is the paradigm case of a monument whose facts are far more impressive than the myths draped over it, and the discipline of the file is to keep three tiers apart. Tier one is settled: who built it (Khufu's Egyptians), when (~2560 BCE), for what (a royal tomb), and that they left their names, their town, and a project logbook behind. Tier two is discredited: that slaves, Atlanteans, or aliens were needed, or that the pyramid is secretly a power plant or a coded record of the earth's dimensions — claims that survive only by ignoring the archaeology and cherry-picking measurements. Tier three is genuinely open and actively researched: the exact ramp method that lifted 2.3 million blocks, and the nature of the room-sized void muon scans found in 2017. Nothing in tier three requires anything from tier two. The wonder here is entirely human, which is precisely what makes it a wonder.
The documented record.
It is the tomb of Khufu
The builder and function are established. Verified The pyramid was constructed as the tomb of the Fourth-Dynasty pharaoh Khufu around 2560 BCE; his name appears in workers' graffiti in the relieving chambers above the King's Chamber, and the monument is integral to a royal funerary complex [1][2].
It was built by paid Egyptian workers, not slaves
The workforce left its own evidence. Verified Excavations at Giza uncovered the builders' town, bakeries, and tombs — the burials of skilled workers honoured near the pyramid, fed on substantial rations. This is incompatible with the popular “slave” image and with non-human builders [2].
A contemporary logbook survives
The project documented itself. Verified The Diary of Merer, papyri found at Wadi al-Jarf, records crews transporting fine limestone to Giza during Khufu's reign — the oldest known inscribed papyri and a direct administrative trace of the construction [1].
The dimensions and alignment are precise — and achievable
The famous precision is real, and within Egyptian capability. Verified The pyramid originally rose about 146.6 metres (it was the tallest structure on earth for roughly 3,800 years), with a square base of about 230 metres per side, level to within a few centimetres and aligned to true north to within a fraction of a degree. These tolerances are remarkable but reproducible with the surveying tools the Egyptians are known to have had — sightlines to stars, water levelling, and simple geometry — not evidence of lost technology [1][4].
The interior structure is fully mapped
The known chambers and passages are documented. Verified The interior comprises a Descending Passage, an Ascending Passage, the corbelled Grand Gallery, the granite King's Chamber (holding an empty, lidless sarcophagus) with five stress-relieving chambers above it, the so-called Queen's Chamber, and narrow shafts. Khufu's name was found as workmen's graffiti in the upper relieving chambers, recorded by Howard Vyse in 1837 [2].
The 2017 “Big Void” and the 2023 corridor
Physics keeps finding new spaces. Verified The ScanPyramids project announced in Nature in 2017 the detection, by muon tomography, of a large void above the Grand Gallery — at least 30 metres long, later revised toward 40. A separate, smaller “North Face Corridor” behind the entrance chevrons was confirmed and, in early 2023, entered with an endoscope. Both spaces are real; the Big Void's purpose is not yet resolved [3].
The competing positions.
The “too advanced for Egyptians” literature. A large body of alternative writing holds that the pyramid was beyond Bronze Age Egyptians and must owe its design to a lost advanced civilization, to Atlantis, or to extraterrestrials. Disputed The premise is the error: it underestimates a demonstrably sophisticated, literate, well-organized state that we can watch building the thing in its own paperwork. Every plank of the “impossible” case — the workforce, the tools, the transport, the quarries — has been found in the ground at Giza [1][2].
The “it wasn't a tomb” theories. Others accept human builders but recast the purpose: a power plant, a water pump, an astronomical observatory, or a vault encoding the earth's dimensions and the value of pi. Disputed The numerical “codes” are a classic case of cherry-picking — with enough measurements and unit conversions, almost any constant can be teased out of a big building — and the tomb function is positively evidenced by the funerary complex, the sarcophagus, and the parallel pyramids of Khufu's dynasty.
The mainstream position, and this archive's. The Great Pyramid is exactly what the evidence says: a royal tomb of extraordinary scale and precision, built by a capable society using known techniques and immense coordinated labour. Disputed The real uncertainties — the precise ramp configuration and the nature of the 2017 void — are ordinary archaeological and engineering questions, not gaps that require anything supernatural [1][3].
The unanswered questions.
The exact construction method
The how is understood in outline, not in full. Claimed Researchers agree on ramps, sledges, and levers, but the specific ramp design — straight, zigzag, internal, or a combination — used to raise blocks to the upper levels is still debated [1].
The purpose of the 2017 void
The newest discovery is unexplained. Unverified Whether the large void above the Grand Gallery is a sealed chamber or a structural feature (such as a construction gap to relieve weight) has not been determined; exploration is ongoing [3].
The purpose of the North Face Corridor
The newer, smaller find also awaits an explanation. Unverified The ~9-metre corridor confirmed behind the north-face chevrons in 2023 may have relieved weight over the original entrance or redirected it around a chamber — but whether it leads anywhere, and what (if anything) lies beyond the Big Void it points toward, is not yet known [3].
Khufu's body
The tomb's occupant is absent. Claimed No mummy of Khufu has ever been found in the pyramid; the burial was robbed in antiquity, leaving the King's Chamber's granite sarcophagus empty. Whether he was ever interred there, or moved, cannot now be established [2].
Primary material.
The Great Pyramid is one of the most thoroughly studied structures on earth. Its evidence base runs from workmen's graffiti to cosmic-ray physics, and each line points the same way.
Khufu's name in the stone
The attribution is written into the monument. Verified In 1837 Howard Vyse entered the sealed relieving chambers above the King's Chamber and found painted workmen's marks, including cartouches naming Khufu — graffiti made by the builders in spaces never meant to be seen, and among the strongest possible evidence of who commissioned the pyramid and when [2].
The workers' town and cemeteries
The labour force left a whole settlement. Verified From 1979 onward, Mark Lehner and Zahi Hawass excavated the builders' town at Heit el-Ghurab south of the plateau — barracks, bakeries, breweries, and evidence the workers ate substantial rations of bread, beer, and meat — along with a cemetery where crew members were buried with honour. As Hawass put it, slaves do not prepare tombs for eternity beside their king. The workforce was skilled, fed, organized, and Egyptian [2].
The Diary of Merer (Wadi al-Jarf papyri)
The project documented itself in real time. Verified In 2013, Pierre Tallet's team found at Wadi al-Jarf the oldest inscribed papyri known — the logbook of an official named Merer, whose crew ferried fine Tura limestone by boat and canal to Giza for the pyramid's casing during Khufu's reign. It is a contemporary administrative record of the construction itself [1].
The interior and its exploration
The chambers are mapped and the newer voids probed. Verified Centuries of survey established the Descending and Ascending Passages, the Grand Gallery, the King's and Queen's Chambers, and the relieving chambers; the ScanPyramids muon survey added the Big Void (2017) and the North Face Corridor, which was entered by endoscope in 2023 [2][3].
The ScanPyramids muon survey
The most important modern discovery, made with particle physics. Verified Muography — tracking cosmic-ray muons that penetrate stone and register more counts where there is empty space — let three independent detector teams confirm a large void above the Grand Gallery without drilling a single hole (Morishima et al., Nature, 2017). It is the first major structure found inside the pyramid since the 19th century [3].
Construction methods
The “how” is reconstructed from tools, quarries, and experiment. Claimed The blocks were quarried on site (limestone) and at Aswan (granite), hauled on sledges over wetted sand to cut friction, and raised via ramps — straight, zigzag, or internal, still debated — with levers for fine placement. Experimental archaeology has repeatedly demonstrated the individual steps; the open question is which combination the Egyptians actually used, not whether it was possible [1].
The sequence.
- c. 2560 BCE The Great Pyramid is built as the tomb of Khufu over roughly two decades.
- Antiquity The burial chamber is robbed; the fine limestone casing is later stripped for building material (accelerated after a 1303 earthquake).
- 1837 Howard Vyse finds Khufu's cartouches as workmen's graffiti in the relieving chambers.
- 1880s Flinders Petrie's systematic survey records the pyramid's precise dimensions and alignment.
- 1979 onward Lehner and Hawass excavate the Giza workers' town and cemeteries.
- 2013 Pierre Tallet finds the Diary of Merer at Wadi al-Jarf.
- 2017 ScanPyramids announces the muon-detected “Big Void” above the Grand Gallery (Nature).
- 2023 The North Face Corridor is entered by endoscope; the Big Void's length is revised upward.
Full bibliography.
- Mark Lehner, The Complete Pyramids (Thames & Hudson, 1997); Ancient Egypt Research Associates (AERA) excavations of the Heit el-Ghurab workers' town.
- Zahi Hawass on the Giza workers' cemeteries; Howard Vyse's 1837 discovery of the Khufu cartouches in the relieving chambers; W. M. Flinders Petrie, The Pyramids and Temples of Gizeh (1883).
- K. Morishima et al., “Discovery of a big void in Khufu's Pyramid by observation of cosmic-ray muons,” Nature (2017); ScanPyramids reporting on the North Face Corridor endoscopy (2023).
- Pierre Tallet and colleagues, publications on the Wadi al-Jarf papyri and the Diary of Merer (found 2013).
- Reporting and experimental-archaeology studies on ramp and sledge construction methods (National Geographic; peer-reviewed multi-ramp modelling).
Frequently asked questions.
What is the Great Pyramid of Giza?
The largest pyramid on the Giza Plateau in Egypt, built around 2560 BCE as the tomb of the pharaoh Khufu. It is the only one of the Seven Wonders of the Ancient World still standing and was the tallest structure on earth for nearly 4,000 years.
What is the current status of this case?
Well-documented. The pyramid is established as Khufu's tomb, built by a skilled, paid Egyptian workforce. The exact construction technique and the purpose of a large internal void detected in 2017 remain open questions; the “aliens” and “slaves” narratives are not supported.
Who built the Great Pyramid — slaves or aliens?
Neither. It was built by paid Egyptian workers, whose town, bakeries, and honoured tombs have been excavated beside the plateau, and whose work is recorded in a contemporary papyrus logbook, the Diary of Merer.
What is the void discovered in 2017?
In 2017 the ScanPyramids project used muon imaging to detect a large, previously unknown space at least 30 metres long (later revised toward 40) above the Grand Gallery. Its existence is confirmed, but whether it is a sealed chamber or a structural feature such as a stress-relief gap is not yet known. A separate smaller corridor behind the north-face chevrons was entered by endoscope in 2023.
How were the pyramid's blocks moved and lifted?
By quarrying on site (and at Aswan for the granite), dragging blocks on sledges over wetted sand to cut friction, and raising them on ramps with levers for placement. The exact ramp design — straight, zigzag, or internal — is still debated, but experiments have shown each step is achievable with the tools the Egyptians had.
How do we know it was Khufu's tomb?
His name appears as painted workmen's graffiti in sealed chambers above the King's Chamber (found in 1837), the pyramid sits at the centre of a royal funerary complex with an empty granite sarcophagus, and a contemporary papyrus logbook records limestone being shipped to the site during his reign.
Was the Great Pyramid really the tallest building for thousands of years?
Yes. At about 146.6 metres it was the tallest human-made structure on earth for roughly 3,800 years, until surpassed by European cathedrals in the medieval period.