Thousands of years ago, small hunting bands crossed the fragile land bridge linking the eurasian continent to the americas and discovered a land untouched by humankind. Over the centuries that followed, their descendents...Thousands of years ago, small hunting bands crossed the fragile land bridge linking the eurasian continent to the americas and discovered a land untouched by humankind. Over the centuries that followed, their descendents spread throughout this land. Bestselling authors and award-winning archaeologists w.