Inca builders fitted stones so tightly no blade could slip
Inca engineers crafted stone structures with such precision that no blade could fit between the interlocking blocks, demonstrating unparalleled ancient masonry skills and earthquake-resistant design.
Inca builders in the 15th century achieved an astonishing feat: they cut and fitted massive stone blocks so precisely that no mortar was needed, and a knife blade couldn't slip between the joints. This ashlar masonry technique was crucial for constructing enduring structures like Machu Picchu and Sacsayhuamán across the rugged Andes Mountains.
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