Pucuncho, the first site, is at an altitude of 4,355 meters. Here, archaeologists discovered 260 stone tools, some of which were up to 12,800 years old, including cartoons and butchery tools.
The second site, the Cuncaicha Rock, provided researchers with numerous tools and other objects that humans used here 12,400 years ago. The rocky ledge formed a natural blanket and protected the inhabitants from wind and weather. The soot stains on the rocks indicate that they used this place as a storage and kitchen facility.
Many of the tools found were made of obsidian, andesite or jasper, which can still be found in the Pucuncho basin area today. The research team led by Dr. med. Kurt Rademaker of the University of Tübingen concludes that the inhabitants of this inhospitable region are completely on the hunt. There were no signs of crops, or even natural food sources.
The inhabitants are probably fed by guanacos and vicuñas, both relatives of the camels, as well as by Andean deer and later llamas and alpacas.