Machu Picchu pre-Inca megalithic core with 50-ton blocks

November 04, 2025PeruGeneralShare

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Key facts

• Pre-Inca construction uses white granite containing quartz crystal (hardness 7)
• Largest blocks weigh around 50 tons, impossible to scratch with bronze tools
• Mortarless joints so tight that 0.09mm gauge cannot fit between stones
• Intihuatana Stone (Sun Stone) aligned to true north, not magnetic north
• Temple of the Sun features curved wall with finest stonework, trapezoidal windows astronomically aligned
• 2012 geophysical survey revealed sealed chamber beneath Temple of the Three Windows containing metallic objects consistent with gold and silver
• Peruvian government denied excavation request, chamber remains unexplored
• Elongated skulls found during Bingham's 1912-1915 expedition show enlarged cranial vaults and larger than normal brain volumes
• Some skulls appear too extreme for typical artificial cranial deformation
• 60% of Machu Picchu believed to still be underground

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