At this point you can learn and see some of Idaho's gold mining history. In the 1860s, gold – lots of it – was discovered and a mining boom startet. Even miner from California made all the way up here to the town of Florence. Today, there is not much left of Florence, but on the other side of the river, you can still see the "scars" of the mining operations. Huge nozzles, so-called "hydraulic giants" took water from the river and shot it against the pre-historic river bed to expose gold. The pit is still visible today.