An Inka road with sidewalls cuts through an agricultural valley. Colca Canyon, Peru, 2014. Image from “The Great Inka Road: Engineering an Empire,” edited by Ramiro Matos Mendieta and José Barreiro. (Photo by Doug McMains)
An Inka road with sidewalls cuts through an agricultural valley. Colca Canyon, Peru, 2014. Image from “The Great Inka Road: Engineering an Empire,” edited by Ramiro Matos Mendieta and José Barreiro. (Photo by Doug McMains)