Mark Sedon talks with Kathryn Ryan about being part of a remarkable expedition kite skiing across Antarctica to climb Mt Spectre. Along with British adventurer Leo Houldin and Frenchman Jean Burgun, he spent 55 days, dragging sleds weighing 180 kilograms in temperatures of -35C. Mark will tell his story as part of the NZ Mountain Film and Book Festival, which he founded with his wife Jo in 2002. This year they'll screen 82 films from around the world.