1970s acoustic soundings at Khafre found only localized cavities, not giant structures. SRRI International conducted acoustic soundings below Pyramid of Khafre burial chamber (Belzoni Chamber) in 1970s Acoustic waves revealed two anomalies: one at 21 meters depth and another at 33 meters in bedrock Anomalies appeared to be localized cavities, not giant vertical cylinders or winding staircases
Recent SAR (Synthetic Aperture Radar) surveys by Italian and Scottish researchers detected anomalies beneath the Giza pyramids, including structures near the Pyramid of Khafre's base. The announcement on March 15/16, 2025 claimed detection of megastructures beneath Giza's Second Pyramid. However, experts in the field, including those consulted by AFP fact-checkers, say claims of 'large underground structures' discovered under the Pyramids of Giza are unfounded. Giza bedrock is naturally fissured and fractured, raising questions about whether detected anomalies represent artificial structures or natural geological features. Acoustic soundings and specific depth measurements from the 1970s remain unverified against available sources.
Key Facts
- SRRI International conducted acoustic soundings below Pyramid of Khafre burial chamber (Belzoni Chamber) in 1970s
- Acoustic waves revealed two anomalies: one at 21 meters depth and another at 33 meters in bedrock
- Anomalies appeared to be localized cavities, not giant vertical cylinders or winding staircases
- Giza bedrock is fissured, fractured and cavernous, with natural caves caused by moving groundwater
- No giant cylinders or winding staircases discovered in acoustic sounding results
Related site: Pyramid of Khafre — view location, images, and history on the Ancient Nerds map.
Source: NEW | Khafre SAR Project: What's Happening Now in 2026?! by Ancient Architects