While Jay Koppelman of Orlando spent three months backpacking around Ecuador, he hiked high up in the Andes Mountains. One day when he was walking along the ridgeline of the Quilotoa volcano crater, about 13,000 feet up, he was overcome with altitude sickness. "I was alone and I lay down in a field," he said. "There was nothing around but some horses. I tried eating an apple that I had in my backpack for energy, tossed the core to a pony, and thought I might pass out. When I finally gathered my strength to keep walking, I found this indigenous woman sitting on the rim of the crater hundreds of feet above the lake below. Snap! I took the shot. Then I was off to find some coca-leaf tea for the nausea and hunker down for the night."