Paths Without Maps: Navigation & Infrastructure Before GPS - Part 3: Inca Suspension Bridges & State Supply Depots
Paths Without Maps: Navigation & Infrastructure Before GPS 1 Paths Without Maps: Navigation & Infrastructure Before GPS - Part 1: Polynesian Wayfinding: Reading the Water Without Instruments 2 Paths Without Maps: Navigation & Infrastructure Before GPS - Part 2: The Qhapaq Ñan: Governing a 25,000-Mile Empire Without the Wheel 3 Paths Without Maps: Navigation & Infrastructure Before GPS - Part 3: Inca Suspension Bridges & State Supply Depots 4 Paths Without Maps: Navigation & Infrastructure Before GPS - Part 4: Harnessing Power: How the Stirrup and Collar Revolutionized Medieval Mobility 5 Paths Without Maps: Navigation & Infrastructure Before GPS - Part 5: The Quiet Engine of Commerce: The Wooden Barrel and the Packaging Revolution ← Series Home Conquering the Andean Divide The monumental scope of the Inca road system, spanning 25,000 miles (40,000 km) of rugged terrain, necessitated ingenious solutions for crossing the numerous steep gorges, raging rivers, and deep ravines of the Andes. Inca engineers mastered this challenge by innovating suspension bridges, floating pontoon bridges, and oroya bridges (a rudimentary rope-and-basket gondola). These structures were essential lifelines, allowing the unimpeded flow of goods, armies, and information across the fragmented geography of the empire. ...