Britain's Prince Harry is preparing himself for the South Pole challenge by sleeping in a freezing cold chamber for 24 hours.
The 29-year-old royal and his British team mates spent yesterday (16.09.13) in a weather simulator set at a temperature of minus 35C, practicing putting up tents and hiking through blizzard winds, in a bid to make sure they're mentally ready for the Walking with the Wounded South Pole Allied Challenge in November.
A spokesman for the charity raising money for injured servicemen and women said: "The team will spend four hours a day making and breaking camp.
"It is important this activity is rehearsed to save time."
The British team will go head-to-head against a team from the US - including Alexander Skarsgard - in a 208-mile trek from the 87 degrees latitude line to the South Pole.
It is thought the race will take 21 days and each day the teams will endure 12 hours of skiing, with just 10-minute rest breaks every two hours.
During the expedition, the teams will have to pull sledges weighing 70kg in bitterly cold temperatures as low as minus 45C, which is colder than a chamber is able to reach.
The Prince, who is Patron of Walking with the Wounded, announced he would be joining the challenge in April, which is the most ambitious task undertaken by a member of the royal family before, and he has been granted leave from the army to do so.
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