Ucayali River
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The Ucayali River is the main headstream of the Amazon River. It rises about 110 km north of Lake Titicaca, in the Arequipa region of Peru and becomes the Amazon at the confluence of the Marañón close
Confluence of the Tambo (from bottom) and Urubamba Rivers (background right) forming the Ucayali River (background left)
“Cumaria, Peru, head of navigation on the Ucayali River 3,000 miles from the sea.”
N.8. General sketch of the rivers studied by the Fitz-Carrald Isthmus Exploratory Commission
"Capt. Herrera and his troops, Perené Colony, June 1914."
Amazon River
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The Amazon River in South America is the largest river by discharge volume of water in the world, and the second-longest or longest river system in the world, a title which is disputed with the Nile.
Ucayali River
…The Ucayali River (Spanish: Río Ucayali, IPA: ) is the main headstream of the Amazon River. It rises about 110 km (68 mi) north of Lake Titicaca, in the Arequipa region of Peru and becomes the Amazon at the confluence of the Marañón close to…
Old drawing (from 1879) of Arapaima fishing at the Amazon River. The arapaima has been on Earth for at least 23 million years.
Amazon tributaries near Manaus
Amazonas state
Amazon Theatre opera house in Manaus built in 1896 during the rubber boom