Ancient Inca Roads System - spanning six countries in South America: Argentina, Bolivia, Chile, Colombia, Ecuador and Peru. Win World Heritage Status, The system, which began forming as trails thousands of years ago, UNESCO call it "an exceptional and unique testimony to the Inca civilisation" (Inca road system UNESCO World Heritage Site ref 1459)
The Inca road system (called Capaq Ñan in Quechua and Gran Ruta Inca in Spanish) was an essential part of the success of the Inca Empire. The road system included an astounding 40,000 kilometers (25,000 miles) of roads, bridges, tunnels and causeways...
Road system of Inca Empire The Inca road system was the most extensive and advanced transportation system in pre-Columbian South America. The network was based on two north-south roads with numerous branches. The best known portion of the road system is the Inca Trail to Machu Picchu. Part of the road network was built by cultures that precede the Inca Empire notably the Wari culture. http://en.wikipedia.org/wiki/Inca_road_system
UNESCO Honours Inca Roads: a pre and post-Columbian Marvel
The Inca also raised llamas and alpacas for their wool, meat, and to use them as pack animals; they captured wild vicuñas for their fine hair. The Inca road system was key to farming success as it allowed distribution of food over long distances. They had no wheels, so these were paved footpaths for people and pack animals, straight and solid and sometimes 30 feet wide.