In this exciting adventure mixed with amazing scientific study, a young, exuberant explorer and geoscientist journeys deep into the Amazon--where rivers boil and legends come to life. When Andr s Ruzo was just a small boy in Peru, his grandfather told him the story of a mysterious legend: There is a river, deep in the Amazon, which boils as if a fire burns below it. Twelve years later, Ruzo--now a geoscientist--hears his aunt mention that she herself...