The Great Sphinx at Giza has faced east toward the rising sun for roughly 4,500 years. Carved from a single block of limestone, it stands about 20 meters tall and stretches 73 meters long. Workers removed stone from three sides of the plateau to free the monument from the surrounding rock. It remains the largest monolithic statue on Earth.
Despite centuries of excavation, translation, and satellite surveys, one basic question remains open. No one can say with certainty which ruler ordered the Sphinx built.
The standard answer appears in textbooks and museum guides. The Sphinx is attributed to Khafre, the pharaoh who ruled Egypt around 2558 to 2532 BCE and built the second pyramid at Giza. This view has dominated Egyptology for more than a century and a half.
The evidence for that attribution, however, is less direct than most popular accounts suggest. There is no surviving inscription from the Old Kingdom that explicitly names Khafre as the builder. In a civilization known for documenting royal achievements in considerable detail, the monument most associated with one of its greatest eras has no contemporary record of construction.
The prevailing theory began with a discovery in 1853. French archaeologist Auguste Mariette was excavating near the valley temple at Giza when workers found a diorite statue buried in the sand. It depicted a seated pharaoh wearing the double crown of Egypt, with a falcon god spreading its wings behind his head. Mariette read the royal cartouche. The name was Khafre. The face bore what appeared to be a resemblance to the weathered face of the Sphinx nearby.
From that point, the connection became standard scholarly opinion. But the statue’s proximity and facial similarity were inferences, not documentation.
In 1979, an American author named John Anthony West published a book suggesting the Sphinx was far older than the reign of Khafre. West was not a geologist. He had worked in advertising and written science fiction. His argument relied on the pattern of erosion visible on the Sphinx enclosure walls. The vertical grooves and rounded channels, he argued, looked like the result of rainfall rather than windblown sand.
In 1990, West brought the question to Robert Schoch, a geologist with a PhD from Yale and a faculty position at Boston University. Schoch examined the site and concluded the erosion patterns on the enclosure walls were consistent with water weathering. At the 1991 meeting of the Geological Society of America, he presented a revised dating of the monument to between 10,000 and 5,000 BCE.
That timeline would place the Sphinx’s construction before the emergence of organized civilization as Egyptologists define it. No cities, no writing, no large-scale agriculture, no centralized states existed anywhere on Earth at that time according to the standard model.
The reaction from Egyptologists was immediate. The core objection was direct. The Giza plateau is a single geological formation. If heavy rainfall had eroded the Sphinx enclosure significantly, similar erosion should appear on nearby rock-cut structures. Critics argued the rainfall explanation required selective weathering that did not occur.
West and Schoch responded that the Sphinx’s orientation, the depth of its enclosure, and the way rainwater would have pooled there made the pattern unique. The debate continued without resolution.
A more moderate geological analysis came in 2002 from Colin Reader, a British geologist. Reader concluded the Sphinx did predate Khafre, but only by a few centuries. He placed its original construction in the early dynastic period, before the Fourth Dynasty. He argued the head is disproportionate to the body because it was originally carved to represent the lioness goddess Mafdet, and was later recarved by Khufu, Khafre’s father, during a religious reform. This would mean the current face does not belong to any pharaoh in its original form.
Reader’s proposal does not require a lost civilization. It only suggests the early stages of Egyptian culture were somewhat older and more developed than the standard timeline permits. His work has not been accepted by mainstream Egyptology, but it has been treated more seriously than Schoch’s more dramatic claims.
The strongest evidence for Khafre comes from Mark Lehner, an American archaeologist who has worked at Giza since the early 1970s. For five years, he operated from an office between the Sphinx’s paws, documenting the monument stone by stone. Working with geologist Tom Aigner, Lehner compared the geological layers of the Sphinx quarry with the blocks used to build the Sphinx Temple directly in front of it. The layers matched. The temple stones came from the same excavation that produced the statue.
The physical sequence of construction on the plateau also places the Sphinx late in Khafre’s building program. The southern wall of the Sphinx quarry forms the northern foundation of Khafre’s causeway. The causeway predates the quarry, which means the lower portions of the Sphinx were carved after Khafre’s pyramid, mortuary temple, causeway, and valley temple were already in place.
Lehner also noted that at least two diorite statues of Khafre found near the Sphinx bear a resemblance to its face, reinforcing the identification.
The Dream Stela, a pink granite tablet placed between the Sphinx’s paws by Pharaoh Thutmose IV around 1401 BCE, complicates the picture. The stela records a dream in which the Sphinx promised Thutmose the throne if he cleared the sand from its body. The inscription contains a reference to Khafre. But the relevant cartouche has been physically damaged for centuries. What remains of it exists only in drawings made by scholars in the nineteenth century before the damage occurred.
There is also the Inventory Stela, discovered by Mariette in 1858 near the ruins of the Temple of Isis at Giza. This text, dated to around 670 BCE, states that the Sphinx was already ancient and was restored during the reign of Khufu. If accurate, the monument predates the entire pyramid-building era. Most scholars consider the stela unreliable, noting its language and titles are inconsistent with Old Kingdom usage. They regard it as a later composition intended to give historical legitimacy to a temple. Even if that assessment is correct, it means the only ancient text connecting the Sphinx to Khafre’s era is also the subject of doubt.
There is no contemporary inscription naming the builder. There is no record from the time of construction. The case for Khafre rests on the sequence of quarrying, the alignment of temples, geological matching of stone, and a resemblance between royal statues and the Sphinx’s face. These are substantial forms of evidence, but they are not documentation.
Frank Domingo, a forensic artist from the New York Police Department, studied the face of the Sphinx in 1996 and concluded it did not match known representations of Khafre. He suggested it more closely resembled Khafre’s brother Djedefre. The finding was not adopted by mainstream Egyptology and has not been decisively disproven.
Egyptian archaeologist Selim Hassan, writing in 1949, was blunt about the state of the record. He noted that once the damaged line on the Dream Stela is excluded, no ancient inscription connects the Sphinx to Khafre at all. Gaston Maspero, a French Egyptologist and former director of the Egyptian Museum in Cairo, had reached a similar conclusion decades earlier.
Colin Reader’s book on the subject, published in 2026, restates his argument that the Sphinx was carved during the Second Dynasty, well before the pyramids of Khufu, Khafre, and Menkaure. He holds that the head originally depicted the lioness goddess Mafdet, not a pharaoh.
The Sphinx has been buried by sand multiple times since its creation. Rulers returned to it repeatedly, clearing it, restoring it, and building around it. Thutmose IV slept in its shadow around 1400 BCE and recorded a dream in which the statue spoke to him. The cult that grew around the Sphinx after his reign encouraged people to regard it as a living deity capable of influencing the future.
The honest answer to the question of who built the Sphinx is that the weight of physical evidence collected by Lehner and his colleagues points to Khafre. The quarry sequence, the temple alignment, and the matching geological layers are serious findings. But the position rests partly on the absence of documentary proof. There are no inscriptions. The Dream Stela contains a damaged reference. The Inventory Stela is widely considered anachronistic. The facial resemblance suggests a connection but does not confirm it.
Two independent geologists, Schoch and Reader, have concluded that the erosion patterns at the site are difficult to explain within the standard chronology. They disagree on the degree but agree on the basic problem.
The disagreement matters beyond the Sphinx itself. If Schoch’s rainfall hypothesis were taken at face value, it would imply the monument was built at a time when organized civilization did not exist according to current models. Most archaeologists reject that conclusion partly because accepting it would require rethinking the broader timeline. Reader’s more modest proposal, placing the Sphinx a few centuries before the Fourth Dynasty, requires no lost civilization. It only requires that early Egyptian culture was somewhat older and more advanced than assumed.
No single piece of evidence has settled the question. The Sphinx continues to face east, as it always has, toward the rising sun. The identity of the person who ordered it placed there has never been recorded in any surviving document. It has been answered provisionally by stone, and that may be the most accurate answer available.
