LONDON — A British adventurer has died after suffering exhaustion and dehydration while attempting to cross the Antarctic alone.

Former army officer Henry Worsley was just 30 miles from the end of the almost 1,000-mile trek when he called for help and was airlifted off the ice Friday.

His family said today Worsley died “following complete organ failure” at a clinic in Chile.

The 55-year-old Worsley covered more than 900 miles in 71 days, pulling supplies on a sled, while attempting to complete Ernest Shackleton’s unfinished South Pole expedition of a century ago.

Worsley’s wife Joanna said the expedition had raised more than $140,000 for wounded troops.