Bradbury and Nuttall here left the Hunt party and returned, while on the 18th of July, 1811, the Astorians, having also said good-bye to Lisa, who had been of more service than detriment, turned their faces toward the Backbone of the Continent. A man named Rose was engaged, with the expectation that he would be serviceable in the Crow country, as he had been a good deal with that tribe, but Hunt discovered indications of treachery, and was glad on reaching the Crows to pay Rose off and let him depart. Crossing the Black Hills, and the Bighorn Mountains, they kept up the Bighorn to Wind River, and on the 14th of September camped at a place where a large fork came down from the Wind River Mountains. It will be noticed that mountains and streams were already named, showing that white men had frequently been in this region. In fact, the trappers with Hunt knew it pretty well, and told him that if he followed up Wind River and crossed a single mountain range he would be on the headwaters of the Columbia, but game being scarce, he decided to go to another stream which they said flowed to the south of west beyond the Wind River range. This was Spanish River, now the Green, the upper continuation of the Colorado. They found a beaten trail leading that way and followed it over some very high ground whence the trappers pointed out the Three Tetons. These magnificent peaks Hunt called the Pilot Knobs! They were hailed with joy, for they marked the end of the first stage of the journey, but had the party been able to look ahead their joy would have collapsed in tears. Descending into Green River Valley, afterwards famous as the place of rendezvous for trappers, they found it delightful, with grassy glades and plenty of buffalo, as well as other game.