Rafael cursed as his lighter again became hot enough to burn his thumb. As the tiny light went out, I could see a dim glow ahead. From an inner cave wafted the smell of the feathered serpent’s noxious ammonia-and-carrion breath. Feeling my way along cautiously, arms extended and tapping ahead with my foot before I set it down on the path, I rounded a bend and entered yet another cavern. Rafael followed, one hand on my shoulder. He let out a low whistle at the sight that greeted us.