No one knows for sure who, exactly, the first person to ski down a mountain after flying up it in a helicopter was. Most people point to Hans Gmoser, a mountain guide who exchanged the Alps for the Canadian Rockies and started a heli-skiing operation in 1965. However, there is conflicting evidence, as provided by photos in some old ski books that show heliskiing in Alaska, Wyoming, and Utah from the 1950s or early 1960s.