University of Pennsylvania Museum of Archaeology and Athropology


Author: Chris Knutson

The “Tired Stones” of Lake Titicaca

Field Experience

By: Chris Knutson

On the morning of August 7, 2002, my colleagues and I crossed the border from Bolivia into Peru. Just past Customs we met up with Edgar Ancalla, our guide in our search for piedras cansadas (literally, “tired stones”)—conspicuous large, modified stones strewn across the landscape of the Lake Titicaca basin. Our objective was to record the […]


Reed Boats and Experimental Archaeology on Lake Titicaca

By: Alexei Vranich and Paul Harmon and Chris Knutson

As much as archaeologists grumble about the scientific merit of Thor Heyerdahl’s Kon Tiki journey from Peru to Polynesia, one thing is certain: he started a trend. On the positive side, archaeologists began experimenting with a variety of ancient technologies as a means to understand the past. On the negative side, a generation of adventurers […]