How old is the Sphinx? The age debate, the evidence on both sides, and the theories

Architecture · 4 September 2026

The Great Sphinx of Giza was most probably carved around 2500 BC in the reign of Khafre, the builder of the second pyramid, which makes it about 4,500 years old. That is the position of nearly all Egyptologists, and it rests on the Sphinx's place in Khafre's pyramid complex, on the stone of its temple, and on its face. A minority argument, made since 1992 by the geologist Robert Schoch, reads the weathering of the Sphinx enclosure as the work of heavy rain and puts the carving at 7000 to 5000 BC or earlier, before any known Egyptian civilization. This article sets out what the Sphinx is, the evidence for the mainstream date, the erosion argument and the replies to it, the later history of the monument, and a separate section for the theories, from the hall of records to the lion that faced Leo.

What the Sphinx is

The Sphinx is a reclining lion with a human head, 240 feet (73 m) long, 66 feet (20 m) high and 62 feet (19 m) wide at the haunches, carved from a single knoll of limestone left standing in the quarry that supplied the core blocks of the pyramids. The knoll sits in a horseshoe-shaped enclosure cut into the bedrock, which is why the body was buried in drifting sand for most of its history and only the head showed. The head is carved from a harder upper layer of rock; the body from softer, layered beds beneath, which erode faster and give the flanks their deep grooves. In front of it are two temples: the Sphinx Temple, built of enormous blocks quarried from the enclosure itself, and, beside it, Khafre's Valley Temple at the foot of the causeway that leads up to his pyramid. Great Sphinx overview.

The evidence for about 2500 BC

• Position. The Sphinx sits beside Khafre's causeway, aligned with his valley temple, and its enclosure respects the causeway's line: the causeway was there first or at the same time. Khafre's complex is dated by his name on its buildings and by radiocarbon dates of mortar in the pyramids to the 26th century BC.
• The Sphinx Temple. Mark Lehner's mapping showed that its core blocks came out of the Sphinx enclosure: the same geological layers, in the same order, appear in the temple walls as in the ditch. So the temple and the Sphinx were made in one operation, and the temple is a Fourth Dynasty building in plan and masonry, identical in technique to the valley temple next door.
• The face. The headdress is the royal nemes, the brow carries the cobra, and the proportions match Fourth Dynasty royal statues; comparison with Khafre's diorite statue from the valley temple is the usual argument, although some scholars prefer his father Khufu or brother Djedefre as the model.
• No earlier culture. Egypt before 3000 BC has been excavated at hundreds of sites: villages, cemeteries, pottery, tools. Nothing from before the Fourth Dynasty has ever been found at Giza, and no culture of 7000 BC anywhere in Egypt was cutting monumental stone.
• Radiocarbon. Organic material in the mortar of the repair blocks on the Sphinx body dates the earliest repairs to the New Kingdom, about 1400 BC; nothing on or under the Sphinx dates earlier than the Old Kingdom.

The water-erosion argument

In 1992 Robert Schoch of Boston University, prompted by the writer John Anthony West, examined the walls of the Sphinx enclosure and saw a profile of rounded, undulating weathering with deep vertical fissures, which he read as the signature of rainfall running down the rock over a long period. Egypt's last wet period ended around 5000 BC, so, he argued, the enclosure must have been cut before that, perhaps as early as 7000 BC or 9000 BC, and the head recarved later by the Egyptians, which would explain why it is small for the body. He has since pointed to Göbekli Tepe as proof that people of that age could build monuments. The water-erosion hypothesis.

The replies

• The rock weathers that way without rain. The Giza limestone is layered, with soft marly beds between harder ones; the softer beds recede and the harder ones stand out, producing exactly the rounded profile Schoch saw. Salt crystallisation, as dew and Nile humidity soak into the rock and dry, breaks the surface; wind carries the debris away. Geologists including James Harrell, Lal Gauri and K. Lal Gauri's team showed that this process, still active today, reproduces the weathering in a few thousand years.
• The vertical fissures are older than the Sphinx. They are joints in the bedrock formed long before any carving, which the enclosure simply exposed.
• Rain did fall after 2500 BC. Egypt was not bone dry in the Old Kingdom; occasional heavy rains over four and a half thousand years are enough to add to the pattern.
• The head is small because the rock was. The harder upper layer that gave the sculptors a good head was only so big; the body was cut down into softer beds. The proportions of other Old Kingdom sphinxes are similar.
• The Sphinx Temple. If the enclosure had been cut in 7000 BC, the blocks quarried from it would have been used in 7000 BC; instead they are in a Fourth Dynasty temple.
• There is nobody to have done it. No settlement, tool, pot or burial of the required age exists in the area.

Schoch's argument was rejected by the Egyptological and most of the geological community; it has never been published in a peer-reviewed journal of archaeology. It remains the most serious of the alternative datings because it is at least an argument from physical evidence, and it is the source of nearly every popular claim that the Sphinx is "older than the pyramids".

What happened to it later

The Sphinx was buried to the neck within a few centuries and dug out several times. The Dream Stele between its paws, set up by Thutmose IV around 1400 BC, tells how the prince fell asleep in its shadow while hunting and was promised the throne if he cleared the sand; he did, and added the first repair casing, which is why the New Kingdom called it Horemakhet, Horus of the Horizon. Ramesses II's sons restored it again; the Saite kings around 600 BC, the Romans, and then the modern excavations of Caviglia in 1817, Mariette in 1853, Baraize in 1925–36 and Hawass and Lehner from 1979 each cleared and patched it. The nose was gone before Napoleon: the Arab historian al-Maqrizi wrote that a Sufi named Muhammad Sa'im al-Dahr broke it off in 1378 in anger at peasants making offerings. The ceremonial beard, fragments of which are in the British Museum and Cairo, was a New Kingdom addition.

Versions and theories

Everything below is a version, not a fact. These are the claims that come up in search next to "Sphinx age", each with who made it and what the evidence says.

The Sphinx faced Leo in 10,500 BC

Version. Robert Bauval and Graham Hancock argued that the Sphinx, a lion facing east, was built when the constellation Leo rose in the east at the spring equinox, around 10,500 BC, the same date they assign to the Giza plan. Reply. Leo as a lion is a Mesopotamian and Greek constellation, not attested in Egypt until the Greek period; the Sphinx faces east because the sun rises there; and there is no trace of anyone at Giza in 10,500 BC. Orion correlation theory.

The hall of records under the paws

Version. The American psychic Edgar Cayce said in the 1930s that survivors of Atlantis had hidden their records in a chamber under the Sphinx, to be found before the year 2000. Reply. Seismic and drilling surveys, some funded by Cayce's own foundation, found natural cavities and fissures in the bedrock and no chamber; the tunnels that exist are short passages cut during earlier restorations. The Sphinx was not found to contain anything. Hall of Records.

Napoleon's soldiers shot off the nose

Version. The most repeated story about the Sphinx. Reply. Drawings by the Danish traveller Frederic Norden from 1737, sixty years before Napoleon, show the nose already gone; al-Maqrizi's account places the damage in 1378.

It was originally the god Anubis, a jackal

Version. The writer Robert Temple proposed that the body was a crouching jackal and the head was recut. Reply. The body has a lion's paws, tail and haunches, matches other Old Kingdom sphinxes, and there is no evidence of recutting on the body.

It is much older than 2500 BC (the erosion argument)

Version. Schoch's rain-weathering dating, above. Reply. Set out in the replies section: the layered limestone, salt weathering and the reuse of the enclosure blocks in a Fourth Dynasty temple account for the evidence without an unknown civilization.

Aliens

Version. The usual. Reply. The quarry, the tools, the temple built from its own spoil and the workers' town a few hundred yards away are the answer.

What is in the archive

The Great Sphinx is in the Ancient temples of the world collection beside the pyramids of Khafre and Khufu. How the pyramids around it were built is in how the pyramids were built; the full Giza story, with its own section of theories, in the pyramids of Giza; and a monument that really is as old as the erosion argument claims for the Sphinx, in Göbekli Tepe.

Open the sections: ancient temples of the world, buildings by style, all articles.