Britain's Prince Harry is to be locked in a freezing cold chamber for 24 hours ahead of his challenge to reach the South Pole.

The royal will experience simulated blizzards and icy temperatures as he and his teammates test their equipment for the upcoming Walking With the Wounded South Pole Allied Challenge in November (13).

A spokesperson says, "They will use cross trainers to simulate skiing. They will ski for two hours at a time before breaking for around 10 minutes. Then they will repeat this for 12 hours after which they will set camp for the night."

The 28-year-old prince and The Wire star Dominic West are leading teams of wounded troops on a 208-mile (335-kilometre) expedition across Antarctica for the charity trek.