Discovery of a big void in Khufu's Pyramid by observation of cosmic-ray muons
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August 2026 journal retraction applies to a 2022 Great Pyramid Khufu SAR paper, not automatically to the separate unconfirmed 2025 Khafre interpretation; distinct datasets/method claims require separate verification.
Qualifies
Non-destructive investigations have independently confirmed real hidden voids and corridors in the Great Pyramid using muon, GPR, ultrasonic and resistivity methods.