Sacsayhuaman stone wall close-up - photos

[rogue1949]

I've been to Cuzco and have had the opportunity to examine Inca walls from Sacsayhuaman to Macchu Pichu. They're fascinating. I tried several times to insert the small blade of my Swiss Army knife into the joints and never succeeded. In some areas the walls are down, from earthquake or Spanish invaders scavaging materials to build their churches. Where the walls were torn down I could see that the stones were actually fitted together not just on the visible joints but also by bookmatching concave and convex surfaces. Some have speculated use of a secret acid, and of course alien assistance. I have no opinion on how these stoneworks were accomplished. I just know I've built enough drystack walls to be amazed they've held together since 1450.