AdventureBlogFeatured Video: Extreme Ski JumpingByMary Anne PottsPublished March 4, 2009ShareTweetEmailNat Geo ExpeditionsBook your next trip with Peace of MindSearch TripsThis content is Subscriber-ExclusiveYou must have a National Geographic subscription to explore this article.SUBSCRIBE NOWto get access to exclusive stories, plus a century of archives, photos, and videos. Already a subscriber?Sign In