Queshuachaca - Credit: Wikimedia Commons
Queshuachaca (also spelled Keshwa Chaca, Q'iswa Chaca, Keswachaka, Q'eshwachaka, Qeswachaka, Q'eswachaca, Q'eswachaka, Queshuachaca, or Queswachaka), is the last remaining Inca rope bridge, consisting of grass ropes that span the Apurimac River near Huinchiri, in Quehue District, Canas Province, Peru."The Last Incan Grass Bridge", Joshua Foer, February 22, 2011, slate.com Read more on Wikipedia
Source: en.wikipedia.org