Heliskiing

It's the ultimate ski experience: A helicopter ride to the depths of inaccessible, pristine wilderness covered with untracked powder. Ski runs are measured in thousands of feet, during which the only tracks you'll see are yours and those of your guide and companions. You'll need strong intermediate ski skills to get started, and you'll need to learn how to ski powder. Once you do, the mountains of British Columbia, Alaska, New Zealand, and Switzerland can be your playground.