Welcome to my expedition log, where I’ll detail my journey from home, in Bali, all the way to the remote, cannibal Asmat tribes of Papua New Guinea. “The rivers are navigable highways. Crocodiles 15 feet long prowl their banks, and jet-black iguanas sun on uprooted trees. There are flocks of brilliant red-and-green parrots. Hornbills with five-inch beaks and blue necks.