Perfect Machine - Richard (Director Cambridge Group for the History of Population and Social Structure) Smith - Bog

Nathan Long had a gut feeling all along that the device was real - and now, he possessed the ancient stones that told its incredible story and a weathered map to its actual location. A map to an ancient city in the Andes that did not exist on any other map in the world - old or new. He now set out on an adventure of a lifetime that may very well be his last.