Does Colorado's Grand Canyon hide an ancient city found by a Smithsonian Institution photographer? Did the Vikings beat Columbus to the New World using a fiber-optic navigational instrument? Who built a colossal water reservoir in Iowa long before the first European settlers arrived? What secret have the "Giants of the California Desert" preserved for more than a thousand years? These are just some of the intriguing questions posed and answered by expert researchers in UNEARTHING ANCIENT AMERICA. They go on to tackle a broad variety of archaeological enigmas, shunned as too heretical for consideration by conventional scholars - a Roman figurine found off the New Jersey coast, North African gold in Illinois from a long-vanished kingdom, an Egyptian knife removed from a centuries-old tree in California, a fifth century Christian church in Connecticut, a prehistoric harbour underwater in the Bahamas, Easter Island's cultural connections with pre-modern Japan and voyagers to Maine from Stone Age Scotland. The distinguished list of contributing writers to UNEARTHING ANCIENT AMERICA includes: Wayne May, founder and publisher of Ancient American magazine; Gunnar Thompson, author of American Discovery; Nobuhiro Yoshida, language professor from the University of Kyushu; William Donato, the world's leading authority on the "Bimini Road"; David Hatcher Childress, founder of The World Explorers Club and head of Adventures Unlimited Press.