The Inca road system, an extensive and advanced network, spanned over 40,000 kilometers and linked Cusco, the capital of the Inca Empire, to all its corners. Constructed by hand using basic tools and local resources, these roads showcased the Inca's engineering prowess. Ingenious techniques, including cut and fill, retaining walls, bridges, and stairs, ensured the roads' … [Read more...] about The Inca Road System: A Marvel of Pre-Columbian Engineering