Source: WTL photo taken on site in Machu Picchu.
Comments: Above the condor's head on the ground below are these three stone seats. The condemned were forced to sit in these "execution seats"; their hands were tied to holes in the stones; and they were left to die. How? From starvation and dehydration. Since condors are carrion eaters, they would clean up this area by picking the victims' bones clean.