The History of Drift Mining — Why California Miners Tunneled Into Mountains to Find a River

In the 1880s, California miners tunneled straight into solid mountains — not to find a gold vein, but to chase a river. A river that had vanished millions of years before anyone was there to see it disappear, buried under rock and, in one case, an entire solidified volcanic flow. This is the forgotten story of drift mining: the underground gold rush that ran for half a century, produced hundreds of millions of dollars, accidentally triggered a scientific controversy that lasted decades — and left almost no trace on the surface, unlike the hydraulic mining scars we still see today. The script is based on historical sources. The footage in this video is a fictional reenactment, not documentary footage of actual events. This video was created for educational purposes.