Formerly called Rio da Dúvida (“River of Doubt”), the river is named after Theodore Roosevelt, who traveled into the central region of Brazil during the Roosevelt–Rondon Scientific …

Oct 10, 2006 · The River of Doubt—it is a black, uncharted tributary of the Amazon that snakes through one of the most treacherous jungles in the world. Indians armed with poison-tipped …

He almost lost his life in the process and the legendary “River of Doubt” was renamed the Rio Roosevelt. It remains a remote and relatively untraveled tributary of the mighty Amazon.

The River of Doubt —it is a black, uncharted tributary of the Amazon that snakes through one of the most treacherous jungles in the world. Indians armed with poison-tipped arrows haunt its …

After his defeat in the 1912 election, Roosevelt looked to his familiar pattern of adventure as therapy. Following an invitation to speak in Buenos Aires, Roosevelt gathered a party to …

Get ready to explore The River of Doubt and its meaning. Our full analysis and study guide provides an even deeper dive with character analysis and quotes explained to help you …

Jul 18, 2025 · In this blog post, he tells the story, through maps, of an expedition taken by Teddy Roosevelt and Cândido Rondon in 1913 down the River of Doubt in the Brazilian Amazon.

Jan 26, 2017 · By the time they finally reached the River of Doubt in February 1914, a lack of supplies had forced Roosevelt and Rondon to downsize their team. In the end, the 22-man …

Oct 10, 2006 · The River of Doubt—it is a black, uncharted tributary of the Amazon that snakes through one of the most treacherous jungles in the world. Indians armed with poison-tipped …

May 8, 2021 · Formerly called the Rio da Dúvida (River of Doubt), today, the tributary to the Aripuanã River, running a length of 760 km (470 mi), is named Rio Teodoro (Roosevelt River) …