Famous Incan grass-rope suspension bridge across Apurimac River, rebuilt annually since Incan period and only one still in existence, Inca Road, Altiplano, Peru

across unique travel destination trail tourism destination suspension bridge suspension south america site scenic rural rope road river repaired prehispanic precolumbian peruvian peru pedestrian path latin america landscape incan inca historic place historic grass grass rope gorge famous place existence crossing cliffs bridge architecture archeological apurimac anthropology altiplano