An "engaging" study of Machu Picchu's transformation from ruin to World Heritage site, and the role a National Geographic photo feature played ( Latin American Research Review). When Hiram Bingham, a historian from Yale University, first saw Machu Picchu in 1911, it was a ruin obscured by overgrowth whose terraces were farmed by a few families. A century later, Machu Picchu is a UNESCO World…