Sir Ranulph Fiennes to announce Antarctica challenge

Adventurer Sir Ranulph Fiennes will today announce plans for a six month expedition across Antarctica during the southern winter - where temperatures plummet to -90C.

Sir Ranulph Fiennes. Credit: Jane Mingay/PA Archive

The 68-year-old British explorer will lead a team across the terrain next year in a challenge which is being called the Coldest Journey.

Sir Ranulph's team will travel by ship to the Pacific coast of the continent before starting the journey on the equinox on March 21, 2013.

The adventurer's previous challenges include climbing Mount Everest and travelling from pole to pole.