As America expands westward, intrepid explorers and rugged mountain men risk their lives to blaze new trails into the wild frontier. The promise of new lands teeming with game and other riches is an irresistible pull for fearless men like Daniel Boone, Jim Bridger and John Colter. Danger surrounds the hunters, trappers and traders who lead the way into the unknown frontier. As they push deeper into the wilderness, crossing impenetrable forests, vast mountain ranges, and unforgiving deserts, they face starvation, deadly weather, ferocious predators, and Native American forces. Their descriptions of the frontier's natural wonders encourage a tide of settlers to head West, and their epic tales of adventure and survival become the stuff of myths and legends.