Since others seem to be posting their ideas, I might as well join in the fun.
Coils of the Orinoco
The spring rains have fallen, and the river dragons have drunk deeply, swelling until they overflow their banks. It is said whoever travels the Orinoco River Dragon from the headwaters all the way to the sea may ask the dragon for one wish. If they are true of heart, the dragon will grant their wish.
Do you have the determination to ride the dragon’s coils and see your dream come true?
The story is a fantasy mix of a survival trip and a pilgrimage story, testing characters' endurance and convictions. The Orinoco River is the body of the dragon, very much an alive and thinking creature of water, earth and rock. While the dragon is very generous, it is also very dangerous, and it tests those who make the pilgrimage. In addition to the hazards of the river itself, characters will encounter many creatures along the way, fantasy versions of jungle creatures, that will make the month and a half trip difficult.