Video proposes a pre-Inca core at Machu Picchu; evidence has not confirmed it

November 04, 2025PeruGeneralShare

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Key facts

• Machu Picchu was built by the Inca in the 15th century, and granite for the site was quarried on the mountain.
• Quartz has a Mohs hardness of 7, but its presence in granite does not show that any construction at Machu Picchu predates the Inca.
• The dry-stone masonry is exceptionally precise, but the cited results do not substantiate the specific 50-ton maximum, 0.09 mm gauge test, or claim that bronze tools could not scratch the stone.
• The Machu Picchu Intihuatana Stone is distinct from Cusco's Sun Stone and is aligned with the cardinal directions; the cited results do not establish the finer claim that it points to true rather than magnetic north.
• The Temple of the Sun is known for its finely fitted curved wall and trapezoidal windows; astronomical intent is an interpretation.
• The video cites a 2012 geophysical survey and interprets possible underground space beneath the Temple of the Three Windows as a sealed chamber containing metal objects consistent with gold or silver.
• The video says Peru denied excavation; the cited results do not confirm that the chamber remains unexplored today.
• The elongated skulls recovered during early excavations are generally associated with intentional cranial deformation; larger brain volumes and deformation beyond normal practice are not established.
• The figure that 60% of Machu Picchu remains underground is presented by the video as an estimate, not a verified archaeological measurement.
• Hiram Bingham, a Yale explorer, reached Machu Picchu in 1911 and led later excavation campaigns through 1915; the precise dates of the skull recoveries are not given by the cited sources.

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