Last July, photographer Reuben Wu and a crew of around 30 people hiked from the Peruvian city of Huaraz, nestled in the Cordillera Blanca region of the Andes, to the 16,000-foot-high Pastoruri glacier. The hike took around four hours and the crew arrived after sunset, finding the melting glacier lit only by a full moon. These Stitched Photos of Greenland's Icebergs Are Sew Great Wu has shot conceptual landscape photography in some of the world's most remote locations--East Java, Patagonia, Chile's Atacama Desert, Norway's Svalbard Archipelago--but this shoot, part of a mini-documentary about Wu's photography done as part of a Coors Light ad campaign, gave him the opportunity to highlight global warming by photographing a fast-receding glacier, one of the last in South America. "There were parts of the glacier where you could see evidence of pretty extreme breakdown and melting of the snow," Wu says. "Parts of the glacier no longer had the epic, jagged chunks of ice."