Inca roads spanned 25,000 miles without iron tools
The Inca Empire engineered a staggering 25,000-mile road network without iron tools, demonstrating extraordinary ingenuity in connecting their vast domain.
Imagine building a 25,000-mile road network across mountains and deserts without iron tools! That's exactly what the Inca Empire achieved in the 15th century with their Qhapaq Ñan system. They relied on bronze, stone, and wood to carve paths, tunnels, and even suspension bridges over 150 feet long.
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