This is the log cabin built in 1852 by trapper, explorer and mountain man, James P. Beckwourth. According to Wikipedia, Mountain Men were trappers and explorers who roamed the North American Rocky Mountains from about 1810 through the 1880s. They were instrumental in opening up the various emigrant trails thus allowing Americans in the east to settle the new territories of the far west. The trails were explored and improved by the mountain men to serve the mule train based inland fur trade.
Mountain men were ethnically, socially, and religiously diverse, fitting no ready stereotype. While they considered themselves independent they were, in fact, economically an arm of the big fur companies. The fur companies held annual fairs for the mountain men to sell their wares known as Trapper’s Rendezvous. Sounds intriguing.