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A ''pongo'' (corruption of the Kichwa ''punku'' and the Aymara ''punku'', meaning a door〔Britannica 1911, op. cit., "Amazon River", page 786, note 2〕) is a type of canyon or narrow gorge along rivers in Peru, especially on the Marañón River (Upper Amazon) and its affluents, in the Amazonas Region. See: * Pongos in Amazonas, the big ''pongos'' of Marañón River * The Amazonas Region, home to ''pongos'' * The Pongo de Manseriche, gorge in northwest Peru where the Marañón River runs * The Pongo de Mainique, most dangerous whitewater pass on the Urubamba River * The Olmos-Marañon Route, transcontinental road, includes the "route of ''pongos''" * The Marañón River, has 35 miles of ''pongos'' before the Amazon River * The Huallaga River, crossing the Andes forming the Pongo de Aguirre ==References== ; Sources consulted ; Endnotes 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pongo (geography)」の詳細全文を読む スポンサード リンク
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