Detailed Instructions: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Problem:When the sad news reached me this morning that Ueli Steck , probably the most accomplished mountaineer of his generation, had died near Mt. Everest, I was surprised to hear that he had returned to a place he disdained for its crowds and its bitter base-camp politics. Steck was forty. He reportedly fell on Nuptse, an adjacent peak, which he was climbing in order to acclimatize to the altitude. He was in Nepal for another attempt at a route—one connecting the summits of Everest and Lhotse—that he’d had to abandon in 2013, after being attacked by Sherpas. 
  
 He and his climbing partner that year, the Italian Simone Moro, had got into a dispute with a group of Sherpas who were fixing ropes on the Lhotse Face and felt that the climbers were endangering them. Moro called one of them a “motherfucker” in Nepali, a grave insult. A group of Sherpas later attacked Steck and Moro with rocks, at Camp 2. The climbers, convinced that their lives were in danger, fled down the Khumbu Icefall. 
  
 Many armchair observers, including me, tried to parse this incident, but, in the final accounting, I think it’s safe to say that Steck was not the cultural imperialist that some critics (including the Swiss papers) made him out to be. But he was certainly hardheaded and single-minded, to the point of being relatively heedless of the opinions of others, be they Sherpa or Swiss. He was an extraordinarily fit and talented alpine athlete, a bit of a freak, really. He didn’t love his nickname—the Swiss Machine—but it suited him. 
  
 Steck achieved fame, first, for his record speed climbs of the great north faces of the Alps, most notably the Eiger. His bewildering solo ascent , in the fall of 2013, of the south face of Annapurna, perhaps the greatest challenge in mountaineering, was a kind of a career capstone. The accomplishment was dogged, though, by doubters who undertook meticulous forensic investigations into the veracity of his claim that he’d made it to the top. I struggled with these allegations. The case against him could be persuasive, but it was impossible to prove, and it was hard for me to imagine the Steck whom I’d gotten to know perpetrating such a fraud. His obduracy seemed to leave no room for dishonesty. Mountaineers can be a competitive and jealous lot. As a climbing partner of his wrote to me once, in a dismissal of the skeptics, “Climbers I find are assholes at the end of the day!” 
  
 On a visit to New York a few years ago (he ran in the marathon and then joined me for a first ascent of One World Trade Center , via the stairwell route), he said that his new mantra was “Slow down and stay alive.” The risks that he’d taken on Annapurna had frightened him, and it seemed, as he approached forty, that he was moving on to more bespoke projects. The last time I saw him, in March, 2015, at a pizzeria in his home town of Interlaken, Switzerland, he was working out the logistics of an astonishing mission to climb all eighty-two of the peaks in the Alps higher than four thousand metres, without using any kind of motorized transport. That summer, he pulled it off in just sixty-two days, travelling between the peaks by foot, bicycle, and paraglider. This had a kind of elegance that seemed to preclude the more brutish ambitions of Everest. 
  
 But just as he’d returned to Annapurna in 2013, after two earlier failed attempts, so he was drawn back to Everest. Earlier this month, on his Web site , he tried to explain his reasons for giving it another go: 
  
 I have repeatedly asked myself, why I do this. The answer is pretty simple: because I want to do it and because I like it. I don’t like being restricted. When I climb, I feel free and unrestricted; away from any social commitments. This is what I am looking for. 
  
  
  
 I am a public figure. This has gradually happened and I can no longer change it. I have accepted it and the only thing I can do is change my attitude. I have sacrificed some of the lightness of being for it. It doesn’t bother me as long as I can still follow my path. I can no longer do what I want, and I am aware of it, but I still can lead a life, which makes me feel happy and content in the evenings. 
  
  
  
 I still need the liberty to do the things I love doing, though. I don’t worry about other people, and I don’t let them influence me too much. I try to find out what I want to do, and not what other people want me to do. 
  
 The lightness of being runs up against the weight of the odds. Last year, while attempting a new route up Shishapangma, in Tibet, Steck and a partner discovered the bodies of Alex Lowe, the American climber, and David Bridges, a photographer from Aspen, who had both been buried in an avalanche there in 1999. Lowe, who was widely considered to be the best mountaineer of his generation, was also forty when he died. Steck and Lowe are now forever linked, in the alpinists’ circle of death. Steck’s demise is a reminder, as though another one were ever necessary, that mountain climbing is an extremely perilous endeavor, and that even its strongest and most talented practitioners, experts by necessity in the art of risk assessment, need a great deal of luck to make it to old age. ||||| Mr. Steck’s work ethic “made him capable of accomplishing things that were simply otherworldly to the rest of the climbing community,” Mr. House added. “What he did was nothing short of miraculous, not only the speed records, but what he did and how he did it in the Himalaya. People just couldn’t understand it.” 
  
 Mr. Steck, who was born in Emmental, Switzerland, was known for his determination to complete challenging climbs, despite evident risks. A 2012 profile in Outside Magazine recounts how, after pledging to his wife, Nicole, that he would not make any more solo ascents, Mr. Steck endeavored in 2011 to climb Shishapangma, in Tibet, with a partner, the climber Don Bowie. After Mr. Bowie found himself unable to continue, Mr. Steck raced up the rest of the way alone. On Sunday, Mr. Bowie shared a picture of himself and Mr. Steck on Instagram, saying he was “totally gutted” and “beyond sadness” at the news. 
  
 Mr. Steck, who twice won the Piolet d’Or award, mountaineering’s highest accolade, attracted some controversy along with the acclaim. In 2014, after becoming the first person to complete a solo climb up Annapurna’s main south face, some people doubted his achievement because he could not offer independent proof that he reached the summit. He was also one of several European climbers who brawled with a group of Sherpas in 2013. 
  
 Mr. Steck had climbed Everest before, and he took its challenges seriously. In a report from his successful summit in 2012, he reflected on the dangers. But he also recalled his frustration at falling behind other climbers. 
  
 “Surely I couldn’t be more tired than the others,” he wrote. “From now on I had to fight. I convinced myself that reaching the summit was only a matter of determination. And I decided that I would reach the summit.” 
  
 Last Monday, Mr. Steck told his Facebook followers that preparations for what would be his last expedition were going well. And in his YouTube video posted before his climb, he described himself as “super ready, I mean I’m so psyched,” adding, “For me the project is already a success.” |||||
Solution:
Ueli Steck, the famed Swiss mountain climber who died in an accident near Mount Everest on Sunday, almost died in very different circumstances the last time he was in the area. The 40-year-old "Swiss Machine" was one of three European climbers who fled to base camp after brawling with around 100 Sherpas at more than 20,000 feet. Despite how the 2013 incident was portrayed, Steck was no "cultural imperialist," writes Nick Paumgarten in a tribute at the New Yorker, though he was "certainly hardheaded and single-minded, to the point of being relatively heedless of the opinions of others, be they Sherpa or Swiss." Paumgarten describes Steck as the most accomplished mountaineer of his generation. Paumgarten notes that last year, Steck found the body of Alex Lowe—considered the best mountaineer of his generation when he was killed by an avalanche in 1999—and the two "are now forever linked, in the alpinists' circle of death." Authorities in Nepal say Steck fell more than 3,000 feet while climbing the 25,791-foot Nuptse peak ahead of a planned attempt to scale Everest on a route only successfully used once before, the New York Times reports. British mountaineer Sir Chris Bonington tells the BBC that Steck was known for speed climbing, though he doesn't believe that put him at greater risk. "The death rate among the very best mountaineers is very high, particularly in the Himalayas," he says.