Ancient Incas built earthquake-proof walls without mortar
The ancient Incas mastered earthquake-resistant architecture by fitting massive stones together without mortar, allowing structures to flex and survive seismic shocks in the Andes for centuries.
The ancient Incas engineered incredibly resilient walls that defied earthquakes, all without using mortar. They precisely cut and shaped massive stones to interlock tightly, a technique called ashlar masonry. This allowed walls to flex during tremors, absorbing energy instead of cracking.
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