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
Discovering Llactapata - the movie
the original documentary film by Hugh Thomson of the 2003
Thomson - Ziegler RGS expedition that re-discovered Llactapata