To measure wind direction, they are using some sexy lingerie - a pair of lacy knickers. The expedition is led by veteran explorer Pen Hadow.
The expedition leader, said the knickers were kindly donated by a supporter of the expedition.
Speaking from the Arctic via satellite phone, he said: “It an entirely genuine situation. If you can get gossamer thin material and attach it your ski pole it is particularly useful for this project because we can cannot use the compass as we are so close to magnetic north and it is too cold to use the GPS.
Commenting on the above Julie Holloway - Director Feeling Sexy Lingerie said "This is the most unusual thing I have ever heard for a pair of knickers ... still what a great story ... it beats flying the flag."