 Oh, there's a new source of beaver. And so men started going up from St. Louis up the Missouri River. But relations with the Native Americans in that area were not conducive to trapping there. Soon, another location to the south was found to be just as valuable. In the 1820s, a group of mountain men led by Jet Smith came across country, came to the Green River Valley. They discovered tons of beaver here, too, plus friendly Native Americans, friendly Shoshone Indians who wanted to trade with them. Clint Gilchrist shares the story from the Museum of the Mountain Man in Pinedale, Wyoming.