Peter Frost is a writer, photographer and independent scholar who has explored the Andes and Amazon for 41 years, and lived in Peru since 1987.  He has authored four books on Peru and Ecuador, including Exploring Cusco, the classic guide to the Cusco region, and the photo guide Machu Picchu Historical Sanctuary. He has worked as a trekking guide and expedition leader for Wilderness Travel Inc. since the early 1980s.


In 2001 and 2002 he organized and led National Geographic Society-sponsored expeditions into the remote region of Vilcabamba, locating and investigating the previously unknown Inca and pre-Inca site of Qoriwayrachina (National Geographic Magazine, February, 2004).  Today he lectures on the history and culture of Peru and the Incas, and works as an accompanying expert for National Geographic Expeditions.

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