How did they do this? Only a guess ...

Above is one of the most sacred and impressive stones ever cut. It has 12 sides for a purpose. The 12 sides of the stone was constructed with intent for religious reasons. It was somehow chiseled and connected to the rest of the stones. The question remains ... how did they do it? The best guess is above ... but honestly, no one is certain how the totality of the projects in Peru were constructed. Besides the stones, the entire city layout can be a project ... all of Cusco is layed out as a Puma ... with Sacsaywaman it's head.