Helena Christina Carroll, a British national who survived a flash flood in a cave in the Khao Sok national park in Surathani province of southern Thailand is helped onto a boat October 14, 2007. Eight people, including four Swiss, a Briton and a 10-year-old German boy, drowned when the flash flood trapped them in the cave in southern Thailand, but British woman, Carroll survived, officials said on Sunday. Picture taken on October 14, 2007.