46. I land inside a deep pool of cold water. Shockingly cold. Water, no doubt, that comes directly from a Nile feeder. With the box still gripped firmly in my arms, I find myself spinning. Round and round like a vinyl record on an old-fashioned turntable. I yell out for Anya and Andre, silently praying to whatever God is up there that they landed safely. When the word “Here!” echoes off the cave walls, I breathe a sigh of relief. But the relief is short-lived. The spinning is becoming more rapid, more forceful. I am beginning to feel myself being sucked into a whirlpool. “Professor! Anya!” I call. “You okay?” “Yes, we’re okay,” he responds. “Okay,” Anya follows. “Listen carefully,” I go on. “We are going to be sucked under. I can only assume that there is a blow hole of som

