The text of the book analyses the travel report produced by then captain Francisco de Paula Castro in 1884, shortly after the end of the exploratory trip led by German doctor and anthropologist Karl von den Steinen to the Xingú River in 1884. The research reveals the hardships, sufferings, tensions and other feelings that were involved in this 'almost' six-month epic through the Amazon rainforest. A journey to the unknown Xingu River in 1884 is what awaits you in the pages of this book.