The mountains, the mist, the naked men yelling and screaming and attacking one another with spears and bow and arrow, had fascinated and entranced me, as had the whole idea of contact between people from dramatically different worlds. That film, Dead Birds, was a groundbreaking ethnographic examination of a barely contacted, stone-age culture that engaged in constant ritual warfare. He was working on a documentary film in the highlands of the Great Baliem Valley. In it he is kneeling, holding his 35-millimeter camera under the close eyes of natives. IвЂ™d been fascinated with the story ever since I first saw a photo of Michael on his first trip to what was then called Netherlands New Guinea. There had been an off-Broadway play about him, a novel, a rock song, even a television show in the 1980s hosted by Leonard Nimoy. HeвЂ™d made it to shore, only to be killed and eaten by the local Asmat headhunters. HeвЂ™d gone native and was hiding out in the jungle. The official cause of MichaelвЂ™s death was drowning, but there had long been a multitude of rumors. One bad wave and IвЂ™d be clinging to a boat in the middle of nowhere. The fact that such a simple, banal thing had happened to him made what was happening to us feel all the more real. No trace of him was ever found, despite a two-week search involving ships, airplanes, helicopters and thousands of locals prowling the coasts and jungle swamps. And then Rockefeller had swum for shore and vanished. One moment his boat was being tossed by the waves, just as ours was, and the next he and his Dutch companion were clinging to an overturned hull. Nelson Rockefeller, seven months into the adventure of a lifetime that had transformed him from clean-cut student to bearded photographer and art collector. He was 23 years old, the privileged son of New York Gov. В© The Metropolitan Museum of Art / Art Resource, NY Rockefeller was most impressed by the Asmat peopleвЂ™s ancestor poles, or bisj-elaborate, sexually suggestive signs that a death had yet to be avenged. If Michael Rockefeller had had a radio when his catamaran overturned in this exact spot in 1961, he never would have disappeared. I hadnвЂ™t wanted to bring the phone, but at the last minute IвЂ™d thought how stupid it would be to die for want of a call. I crawled forward, reached under a plastic tarp and fumbled blindly in my duffel for the Ziploc bag holding my satellite phone, and slipped it into my pocket. We were crossing the mouth of the Betsj River, a turbulent place of incoming tide and outrushing water, when the waves slammed and our 30-foot longboat rolled. It is a world of satiny, knee-deep mud and mangrove swamps stretching inland, a great hydroponic terrarium. Here itвЂ™s hard to know where the water begins and the land ends, as the Arafura SeaвЂ™s 15-foot tides inundate the coast of southwest New Guinea, an invisible swelling that daily slides into this flat swamp and pushes hard against great outflowing rivers. In its 10,000 square miles, there is but one airstrip, and outside of the main вЂњcityвЂќ of Agats, there isnвЂ™t a single cell tower. ThereвЂ™s still not a single road or automobile. Until 50 years ago, there were no wheels here. Hornbills with five-inch beaks and blue necks.ДЄnd secrets, spirits, laws and customs, born of men and women who have been walled off by ocean, mountains, mud and jungle for longer than anyone knows. There are flocks of brilliant red-and-green parrots. Crocodiles 15 feet long prowl their banks, and jet-black iguanas sun on uprooted trees. And sago palm, whose pith can be pounded into a white starch and which hosts the larvae of the Capricorn beetle, both key sources of nutrition. In the jungle there are wild pig, the furry, opossumlike cuscus, and the ostrichlike cassowary. ItвЂ™s teeming with shrimp and crabs and fish and clams. Everything you could possibly need is here. President and Fellows of Harvard University Peabody Museum of Archeology and Ethnology ДЄsmat is, in its way, a perfect place. The Baliem Valley was a вЂњmagnificent vastnessвЂќ in RockefellerвЂ™s eyes, and its people were вЂњemotionallly expressive.вЂќ But Asmat proved to be вЂњmore remote country than what I have ever seen.вЂќ

Survival bow the long dark