El Fotógrafo and I are back from the pilgrimage of Qoyllur Rit’i in the Sinakara Mountain range, 80 miles southeast of Cusco, where for three brutally cold nights (May 16 – 18) we camped out below Qolqepunku glacier, along with tens of thousands of pilgrims from parts of Peru and Bolivia. Our goal? To document, in photos and interviews, the changes that global warming has wrought on this 17,000-foot-high glacier, which is considered sacred by the Andean people, and to find out what pilgrims think about their revered glacier vanishing into the ether. It was a rough stint, but worth it: EF got some wonderful shots, I was able to…