Robert Schoch's geological research suggests the original Sphinx enclosure predates the 4th dynasty, while temple extension bedrock dates to Khafre's time. The quarried bedrock appears less eroded than the original enclosure walls—key evidence fueling the Egyptology debate.
Geological Evidence Suggests Sphinx Enclosure Pre-Dates Fourth Dynasty

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Key facts
- Geological evidence indicates first phase of Sphinx enclosure and associated temple predate fourth dynasty
- Bedrock cutting for Sphinx temple extension firmly dated to fourth dynasty by Egyptologists
- Quarried bedrock appears less eroded than original enclosure wall
- Original enclosure cut significantly earlier than fourth dynasty
- Colin Reader's 2024 book 'Rewriting the History of the Great Sphinx' presents this evidence
Sources
archaeopress.com
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