Machu Picchu, Inca Pachacuti’s Sacred City; A multiple ritual, ceremonial and administrative center.
An in-depth analysis of Machu Picchu by Andean archaeologist
Gary Ziegler and astronomer, Kim Malville
The Discovery of Cota Coca; Gateway City to Choquequirao - a Royal Geographical Society Expedition R
The official report of the discovery and investigation of a major
Inca site on the Inca road to the royal estate at Choquequirao
