New Laser Scans Of Machu Picchu Reveal the Hidden Engineering Nobody Talks About

Every year, 1.5 million tourists photograph the temples and terraces of Machu Picchu. They see the iconic ruins. They miss the real engineering. Recent LiDAR scans revealed that the visible structures represent only 40 percent of the actual construction. The other 60 percent lies beneath their feet — thousands of feet of drainage channels carved into bedrock, engineered foundation fills extending meters deep, retaining systems that have held the mountain together for five centuries. The builders did not construct a city on a mountain. They rebuilt the mountain itself. Modern civil engineers study it as a model. Nobody talks about what made it possible.