Alvaro Higueras' page describing archaeological research on the prehistoric Tiwanaku polity, recent investigations in Cochabamba, Bolivia, and containing a portal to archaeological research in Andean South America.

A controversial search for lost cities in Bolivia will embark on the fourth phase of exploration. Archaeology Magazine 55(4)

Research demonstrates that, while an important Tiwanaku regional center, Khonkho was a major ceremonial centre during the Late Formative Period (100 BCE ? 500 CE), preceding Tiwanaku hegemony.

Scholarly papers on Andean prehistory in PDF format. Include several on Chiripa in Bolivia and the Titicaca Basin.

An applied archaeology project in the Bolivian Amazon testing prehistoric methods of sustaining large populations.

Cesare Berrini's hypotheses concerning the relationships between bas-relief carvings on the Gateway of the Sun, the annual solar cycle, and geometric time measurement.