The River of Corn

In 1540 Hernando de Soto and 600 Spanish conquistadors crossed the Savannah River into what is now South Carolina and thus entered the empire of the largest and most powerful Native Indian civilization in the American Southeast. No trace of that society has been identified since. A great civilization led by a beautiful queen, a magnificent temple covered in pearls, a ruthless conquistador lusting for gold, who were the Chicora? What happened to them?