August 17, 2012 – Alpamarca, Peru – Amazon River explorer PIOTR CHMIELINSKI, left, and DAVID KELLY, Amazon Express white water team manager, go over detailed topographic maps.at Lago Acucocha. Lago Acucocha is the headwaters of the Rio Mantaro and possibly the headwaters of the Amazon River. (Photo by Erich Schlegel/zReportage via ZUMA Press)
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