The stones at Sacsayhuaman weigh 100 tons — nobody will tell you how they got there

Spent three weeks in Cusco last year, not for Machu Picchu tourist nonsense, for THIS. The zigzag walls at Sacsayhuaman. The biggest blocks are somewhere between 100 and 360 metric tons. I stood next to one. It's bigger than a city bus and it fits against its neighbor so perfectly you literally cann……