One of the most incredible and longest-running political coverups in history is revealed here: the migration of thousands of Welsh colonists to North America over 300 years before Columbus. Can the similarity between the structures found in the Ohio Valley and those in the British Isles from the same time-period be a coincidence? Is the story of Prince Madoc, widely circulated through Europe from the 12th Century on, merely myth and folklore, or is it the literal truth, and are the Mandan Indians and other Native American tribes direct descendents of this world-shaking voyage? And why was there a need for a cover-up over the centuries? The answer will surprise you.