Back in December, msnbc.com published a photo story on Qoyllur Rit’i and global warming, with photos by El Fotógrafo and captions by yours truly. I neglected to provide the link to that slide show, which includes some of EF’s strongest images of the dangerous (and endangered) glacier pilgrimage, so here it is, belatedly: “Peru’s Disappearing Holy Glacier.” This photo, above, of a veteran ukuku is one of my favorites. The guy must be about 40 years old, but exposure to the harsh Andean elements has made his face a craggy moraine field. Most of the ukukus at QR are in their late teens and early 20s; you don’t see a lot of…