The Grand Canyon of the Amazon thumb|upright|Marañón River as seen from Quchapata in Peru The upper Marañón River has seen a number of descents. An attempt to paddle the river was made by Herbert Rittlinger in 1936. Sebastian Snow was an adventurer who journeyed down most of the river by trekking to Chiriaco River starting at the source near Lake Niñacocha.
the grand canyon of the amazon thumb|upright|marañón river as seen from quchapata in peru the upper marañón river has seen a number of descents an attempt to paddle the river was made by herbert rittlinger in 1936 sebastian snow was an adventurer who journeyed down most of the river by trekking to chiriaco river starting at the source near lake niñacocha