The Royal Geographical Society supported Thomson-Ziegler project which located and investigated the Inca site at Coat Coca in 2002 and rediscovered the archaeological complex of Llactapata in 2003, continues to undertake field explorations seeking new information and data about the builders of Machu Picchu and those who preceded the Inca in this remote region of Peru's rugged southern Andes.
The 2006 Andean Research Expedition was conducted with this objective, during the
A report of the April 2016 Andean Research Expedition to Choquequirao and the upper Apurimac Canyon published in the Peruvian Times. http://www.peruviantimes.com/03/new-inca-ruins-charted-near-choquequirao/26814/
In a Podcast interview with Rick Vicchico, Inca expert Dr. Gary Ziegler shares some of his insights into the geo-cosmic architectural features of the spectacular mountaintop Royal Estate of Choquequirao. http://www.fertur-travel.com/blog/2015/podcast-machu-picchus-sacred-sister-choquequirao/11450/