(1) ... young woman was taken to safety (2) ... a helicopter yesterday after getting stuck on a freezing Swiss mountain. She and her climbing partner spent two nights under a simple shelter on a rock 9,800 feet up one of Switzerland's most difficult mountains. The rescued woman, Rachel de Kelsey, admitted yesterday that they would have died if they had had to spend another night there. Their only chance of (3) ... survival was to dig themselves a hole (4) ... the snow behind the rock and hope that they would be found. Miss Kelsey said that she had sent messages (5) ... five friends who she thought might be able to get (6) ... touch with the mountain rescue team. The alarm was eventually raised by a friend in London after he received her text. He contacted (7) ... rescuers who found (8) ... pair but were unable to rescue them immediately because of the storm.