John Colter, known as the first mountain man, came west as a member of the Lewis and Clark expedition. They braved the great Missouri river, traveled the plains, and crossed the Rocky Mountains, eventually finding the Pacific Ocean. On the return trip Colter turned back west again, this time with two fur trappers and headed to the beaver rich Yellowstone river. He was the first white man to see such sights as present day Yellowstone national park, Pierre’s hole in Idaho, the Teton mountain range, and t