A quadruple backflip performed at Cardrona ski field on Thursday could be a world first, Stuff reveals. With no official list of those to complete a quadruple backflip, 19-year-old competitive freeride skier, Connor Addis from Waiheke Island, has been combing the internet for video evidence of other skiers achieving the feat. Peter Legnavsky, head of the parks squad school at Cardrona, described the jump as a “massive feat”. “It is absolutely amazing for Connor to do such a thing,” he said.