Riding a 50,000-Ton Tsunami of Logs Down a Deadly River

Nineteenth-century logging wasn't just manual labor; it was a high-stakes battle against gravity and fluid dynamics. To move millions of tons of timber, engineers built temporary mega-structures designed for controlled destruction. How did they hold back entire rivers using only wood, stone, and sheer physics? And when the systems failed, what forced these crews to turn to volatile explosives? Discover the brutal, precise reality of the spring river drive and the industrial ingenuity hidden underwater.