Members of the public regularly get in touch with Charles Stanish, an expert on Andean cultures at the University of California, Los Angeles. Two years ago, Stanish received a call from a man in ...

Nestled on a mountain ridge in the Urubamba Valley, Machu Picchu was built as a palace that was part of a larger royal estate belonging to the Inca emperor Pachacuti (reigned ca. 1420–1472). A team of ...