love and survival by raft on the Amazon's relentless Madre de Dios
Married less than two years, the author and her husband decided they wanted a honeymoon adventure.  They set out for South America, including the Amazon River.  When their plane crashes on the way to their next destination, they are stranded in a town in the middle of nowhere.  Boats are infrequent and they would have to wait months for the next one.  They decide to take a stranger's suggestion and build a raft to take them down the Amazon to their next destination, which, he assures them, will be easy.  Ready for a new adventure, they are excited as they set off.  Soon their excitement turns to horror and despair as a storm pushes their raft  into a dead-end channel of the piranha-infested River Madre de Dios (Mother of God). Without the means of a motor or paddles, they wait for death as they slowly starve to death for twenty-six days.  Only a chance encounter with two natives saves their lives.