The Quebrada Carhuasanta is located in the Apurímac Region of Peru. It is known as the headwaters of the Amazon River. The brook is fed by the winter snows of Nevado Mismi, (5,597 m), some 6,400 kilometres from the Atlantic Ocean. Of all the possible river sources in the Amazon Basin, it is the snow melt of the Carhuasanta that has been calculated by cartographers to be the furthermost water source from the mouth of the Amazon.
The Carhuasanta joins with the Quebrada Apacheta, becoming the Rio Loqueta. The river has several more name changes before it becomes the Apurímac River. The mining town of Cailloma lies near the junction of four rivers that form the Apurímac.
The National Geographic Society sent a three-man expedition to the region in 1971, headed by Loren McIntyre. The expedition travelled from Cailloma by four-wheel drive, but soon got bogged. Continuing on by back-packing up the river, they climbed up the Apacheta Trail and traversed onto Nevado Mismi, taking in Nevad (from [www.wikipedia.org](http://www.wikipedia.org/wiki/Carhuasanta).