the river from his grandfather when he was twelve years old. According to the story he was told, the river was discovered by Spanish conquistadors when they headed deep into the rainforest in search of gold. Some of the men who returned spoke about a dangerous land filled with poisoned water, man-eating snakes, starvation, disease, and a river that boils from below.

Twenty years after his grandfather told him about the river, Ruzo finally found someone who had actually seen the river —his own aunt.

Ruzo has now written a book on the phenomenon, The Boiling River: Adventure and Discovery in the Amazon. He is also conducting detailed geothermal studies of the boiling river, and collaborating with microbial ecologists to investigate the extremophile organisms living in its scalding waters. Ruzodescribed Wilson as being under a lot of pressure and stress but confident in the outcome of the grand jury investigation.

“It's fair to say that neither he nor his defense team expect an indictment,” Roorda told the AP, offering his impression of the situation based his meeting with Wilson.

The Aug. 9 shooting led to weeks of protests and saw citizens and heavily armed police clash. Stores in Ferguson were looted and property was destroyed. Hundreds were arrested.

[Related: Timeline of events after the death of Michael Brown]

Wilson has reportedly told investigators that he feared for his life and felt justified in fatally shooting the 18-year-old. He said Brown assaulted him inside his patrol SUV and tried to take his gun. The teen’s family and some witnesses say that Wilson