After 71 days, British adventurer Henry Worsley was just 30 miles short of his attempt to make history by crossing the Antarctic alone when he had to stop and call for help. He was airlifted to safety but later died from organ failure.
After he called for help and was flown to a hospital in Chile on Friday he was suffering from exhaustion and severe dehydration, reported wire service AFP.
"It is with heartbroken sadness I let you know that my husband, Henry Worsley, has died following complete organ failure," his wife Joanna said in a statement.
Worsley died in the Clinica Magallanes in Punta Arenas, Chile, "despite all efforts" of medical staff, she added.
She said Worsley had raised $143,000 for the Endeavour Fund, a charity to help people wounded in the military and backed by Prince William, his wife Kate and brother Prince Harry.
William paid tribute to Worsley and his attempt to cross Antarctica via the South Pole -- a feat left unfinished by explorer Ernest Shackleton a century ago.
"Harry and I are very sad to hear of the loss of Henry Worsley. He was a man who showed great courage and determination and we are incredibly proud to be associated with him," William said.
"We have lost a friend, but he will remain a source of inspiration to us all, especially those who will benefit from his support to the Endeavour Fund.
"We will now make sure that his family receive the support they need at this terribly difficult time."
A 55-year-old former Army officer from London, Worsley had hoped to become the first man to cross the Antarctica solo, unsupported and without assistance.
He was 71 days into the attempt when he called for help. A statement on his website said he was found to be suffering with peritonitis, an inflammation of the lining of the abdomen.
In his final statement from the expedition he expressed his dismay at having to pull out so close to the end after covering almost 1,500 kilometres on foot, dragging his equipment in a sledge.
"It is with sadness that I report it is journey's end -- so close to my goal," he said.
Another British explorer, Ranulph Fiennes, dropped out of a similar charity trek in 2013.
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